Oregon Islands National Wildlife RefugeU.S. Fish and Wildlife Service20201231Vector Digital Data Set (Point)Newport, OregonU.S. Fish and Wildlife Servicehttps://ecos.fws.gov/ServCat/Reference/Profile/130254Oregon Islands National Wildlife RefugeU.S. Fish and Wildlife Service20201231Ongoing ProjectNewport, OregonU.S. Fish and Wildlife Servicehttps://ecos.fws.gov/ServCat/Reference/Profile/125356 June 3-4, 2014 on digital camera. Primarily captured from a helicopter roughly 800-900' in altitude, Right Front Photographer - Shawn Stephensen, USFWS, Right Rear Photographer - Bill Bridgeland, USFWS. Oregon Coast National Wildlife Refuge Complex manages an Aerial Photography Program for collecting refuge-wide aerial imagery datasets that are used to monitor nesting seabirds on offshore islands. Aerial flights are generally conducted annually to monitor population status and trends, but the imagery has been used for other resource monitoring purposes. These photos were captured at very high resolutions and have about 1-foot pixel (ground) resolution. Please note that these photos have not been georeferenced. The photos have not been orthorectified and therefore there will be photo anomalies and mis-matches between adjoining photos. Caution should be exercised if attempting to use this imagery to conduct measurements. After images were selected for best quality, in some cases, colony-wide, or larger sections of large islands were stitched (mosaiced), to help in the seabird counting process. This metadata record is for the stitched images only. Aerial photography has served as the primary means for monitoring populations of nesting seabirds, and the subsequent analysis of long-term seabird colony legacy data in the Pacific Northwest as a regional baseline. The 2014 set of photographs have a completed refuge- wide colony count for 2014, where each photograph has a hand count of nesting seabirds stored in a geodatabase format. For more information about the long-term monitoring of seabirds along the Oregon Coast, go to The Service Catalog (ServCat) at the following link: https://ecos.fws.gov/ServCat/Reference/Profile/125347 This metadata record was written to cover stitched images from the 2014 flight. These stitched island-wide mosaics are made of the best quality images. The stitched island-wide mosaics can be found on the U.S. Fish and Wildlife's internal Enterprise Data Warehouse (EDW), and ServCat reference, https://ecos.fws.gov/ServCat/Reference/Profile/130254. It should be noted that all images from the 2014 flight are digital, and available upon request.2014060320140604ground conditionCompleteNone planned-124.605988995-123.95946695245.946319586842.0930049289USGS Thesaurusaerial photographyimage collectionslong-term ecological monitoringData Categories for Marine PlanningBirdsISO 19115 Topic CategorybiotaTargetSeabirdsCommon geographic areasNorthern Oregon CoastalSouthern Oregon CoastalMarineRock IslandsUSFWSNational Wildlife Refuge None. Digital images (scanned slides) are organized by Year and Colony ID. Directories were formed to organize stitched images. These images are available through the FWS Enterprise Data Workshop (EDW), and full metadata for collection and individual photograph level metadata are available at https://ecos.fws.gov/ServCat/Reference/Profile/128389. This geospatial representation was generated to show the spatial extent of the photography (mosaic) series. Photographs (and subsequent stitched mosaics are not georeferenced). Digital images can be provided upon request. Not for navigation.This data is intended to make results of research available at the earliest possible date, but is not intended to constitute final or formal publication. The U.S. Fish and Wildlife makes every effort to provide virus-free files but does not guarantee uncorrupted files. The U.S. Fish and Wildlife does not guarantee this data to be free from errors, inaccuracies, or viruses, and disclaims any responsibility or liability for interpretations or decisions based on this data.U.S. Fish and Wildlife ServiceShawn W. StephensenWildlife BiologistMailing and Physical

2127 SE Marine Science Drive

Oregon Coast National Wildlife Refuge Complex

NewportOregon97365USA(541) 867-4550shawn_stephensen@fws.govU.S. Fish and Wildlife Service, Oregon Islands National Wildlife RefugeEnvironment as of Metadata Creation: Microsoft [Unknown] Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1 (Build 9298) Service Pack N/A (Build N/A)No formal attribute accuracy tests were conducted.No formal logical accuracy tests were conducted.Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.A formal accuracy assessment of the horizontal positional information in the data set has not been conducted.A formal accuracy assessment of the vertical positional information in the data set has either not been conducted, or is not applicable.Oregon Islands National Wildlife Refuge20201231Raster Digital Data (Aerial Imagery)Newport, OregonU.S. Fish and Wildlife Servicehttps://ecos.fws.gov/ServCat/Reference/Profile/1283894800Digital and/or Hardcopy Resources2014060320140604ground conditionDigital hand-held aerial photographyThe images were captured in 2014, but a complete seabird count was not performed until images were scanned and processed in 2019.Image files are organized by Year and Colony ID. Directories were formed to organize stitched image (if made). These images are available through the FWS Enterprise Data Workshop (EDW).20201231Sseabird colonies were photographed using digital camera systems. These were hand held cameras, one photographer in front of helicopter, one in back. Image is true color, and the images are generally stored in .JPG format. Images are currently stored in their native filenames (e.g.IMG_0170.JPG).20120611Images were automatically assigned unique identifiers20090614This metadata record serves as the record of stitched mosaics used to produce counts in 2014. This record will be updated as legacy files are located and archived.20181231 Images were selected from the principle Oregon coast seabird colony survey completed each year during 2 – 4 days in early- to mid-June. Although additional aerial photos were collected over multiple flights in some cases (e.g. partial survey completed in mid-July), the counts from these photos would not be comparable to other data given the difference in timing of the survey. From the pool of photographs available for each colony in each year, observers manually checked and selected the highest quality photos based upon a variety of factors including whether or not: •individual birds were distinguishable from each other •individual birds were distinguishable from the background, particularly in shadows caused by topographical features •individual birds were not blocked by other birds or topographical features •the image was part of a series of images that could be stitched together Selected slides from the inventory were reviewed for quality, and scored. The best images were selected for further processing and/or counts. Image Grading: We established a numerical grading scale based on absolute visual characteristic grading (Ludewig et al. 2010) to assess image quality of each colony counted. The following aspects were considered with respect to image grading: •Sharpness/contrast and distance: are individuals distinguishable? Are birds distinguishable from the background? •Coverage: is entire colony visible? Is topography obscuring birds? •Angle: are birds blocking other birds, are birds closest to photographer approximately the same size as those further away? Using the following grading scale, each counted image was given a grade which was entered into the Seabird Colony database along with the count record. Grading scale: 1.Excellent image quality: no limitations for counting 2.Good image quality: minimal limitations for counting 3.Sufficient image quality: moderate limitations for counting but no substantial loss of information 4.Restricted image quality: relevant limitations for counting, clear loss of information 5.Poor image quality: image not usable, loss of information Each colony count received one grade for image quality, regardless of the number of images included. For the 325 colony counts completed during the course of this project, the majority (n = 216; 66%) received an image grade of 2 or 3. A smaller number of colony count images received a grade of 1 (n = 50; 15%) or 4 (n = 59; 18%). Colony images received a grade of 5 on one occasion because the image quality was too poor to count. 20181231 We stitched images together where possible in order to reduce the time required to both orient images on a colony and delineate areas to count. We compared stitched images created by two readily available software packages, Adobe Photoshop and Microsoft Image Composite Editor, to determine which we preferred. Photoshop included many image editing features such as distortion removal and a contrast slider tool in addition to a stitching function, but we found the processing time lengthy and resulting file size often prohibitively large. In contrast, the sole function of Image Composite Editor was to stitch images and in most cases, this program produced comparable or even superior stitches in much less time than Photoshop. As a result, we used Image Composite Editor whenever possible. Photoshop was utilized for some poor quality photos that Image Composite Editor could not process, as Photoshop allowed some manual manipulation of image placement in the final stitch. After photos were stitched together the resulting image was inspected for smooth transitions and seams. Stitched images were saved in either a JPG or TIFF format. Photos were imported into ArcMap (v10.5-10.6.1 depending on date and computer) to be counted. Images counted by the USFWS during the study period (1988-2014) prior to the Legacy Project, were stitched using Adobe Photoshop and processed/counted as Jpeg files. Stitched image headers, or single image if the entire island is covered in one photograph, are updated so that they will align with geodatabses if the project must be recreated. 20191231Stitched photo(s) of each colony were imported to a new ArcMap .mxd file and moved to the vicinity of the colony location using a georeferenced Oregon coast seabird colony layer and the georeferencing toolbar. MXD files are available by request, and are stored on the FWS Enterprise Data Warehouse (EDW).20201231Stitched images were joined with data from the Seabird Slide Catalog to gather photograph level metadata for the Stitched Images (those used to count seabirds). This tabulation was used to create a geospatial representation of the mosaics using colony's geospatial coordinates (center points) form the Seabird Colony Catalog.20201231Point0.01973068310.0272979425Decimal secondsD_WGS_1984WGS_19846378137.0298.2572235632014_NestingSeabird_StitchedImages_COMU_RecordLevelMetadataTable containing attribute information associated with the data set.Producer definedFIDInternal feature number.EsriSequential unique whole numbers that are automatically generated.ShapeFeature geometry.EsriCoordinates defining the features.strYYYYYear as stringProducer defined2014UnknownProducer definedYYYYYear as numberProducer defined2014UnknownProducer definedColonyColony ID as used in the Seabird Colony CatalogProducer defined219-001UnknownProducer defined219-002UnknownProducer defined219-003UnknownProducer defined219-006UnknownProducer defined219-012UnknownProducer defined219-018UnknownProducer defined219-020UnknownProducer defined219-020.1UnknownProducer defined219-021UnknownProducer defined219-024UnknownProducer defined219-025UnknownProducer defined219-029UnknownProducer defined219-030UnknownProducer defined219-031UnknownProducer defined219-036UnknownProducer defined219-036.1UnknownProducer defined219-037UnknownProducer defined219-038UnknownProducer defined219-039UnknownProducer defined219-040UnknownProducer defined219-041UnknownProducer defined219-042UnknownProducer defined219-043UnknownProducer defined219-049UnknownProducer defined219-054UnknownProducer defined219-055UnknownProducer defined219-056UnknownProducer defined219-061UnknownProducer defined219-063UnknownProducer defined219-064UnknownProducer defined219-066UnknownProducer defined219-068UnknownProducer defined219-069UnknownProducer defined219-071UnknownProducer defined219-072UnknownProducer defined219-073UnknownProducer defined219-075UnknownProducer defined219-076UnknownProducer defined219-077UnknownProducer defined243-000.3UnknownProducer defined243-021UnknownProducer defined243-024.8UnknownProducer defined243-025.3UnknownProducer defined243-027UnknownProducer defined243-028.1UnknownProducer defined243-031UnknownProducer defined243-032UnknownProducer defined243-033UnknownProducer defined243-034UnknownProducer defined243-035UnknownProducer defined270-000.1UnknownProducer defined270-000.2UnknownProducer defined270-000.3UnknownProducer defined270-000.5UnknownProducer defined270-003.1UnknownProducer defined270-004UnknownProducer defined270-004.1UnknownProducer defined270-005UnknownProducer defined270-006UnknownProducer defined270-014UnknownProducer defined270-015UnknownProducer defined270-020UnknownProducer defined270-022.1UnknownProducer defined270-023UnknownProducer defined270-024UnknownProducer defined270-027UnknownProducer defined270-029UnknownProducer defined270-030UnknownProducer defined270-032UnknownProducer defined270-033UnknownProducer defined270-035UnknownProducer defined270-036UnknownProducer defined270-045UnknownProducer defined270-046UnknownProducer defined270-047UnknownProducer defined270-048UnknownProducer defined270-049UnknownProducer defined270-052UnknownProducer defined270-053UnknownProducer defined270-054UnknownProducer defined270-057UnknownProducer defined270-063UnknownProducer defined270-067UnknownProducer defined270-069UnknownProducer defined270-071UnknownProducer defined270-076UnknownProducer defined270-080UnknownProducer defined270-082UnknownProducer defined270-083UnknownProducer defined270-087UnknownProducer defined270-089UnknownProducer defined270-103UnknownProducer defined270-114UnknownProducer defined270-115UnknownProducer defined270-214UnknownProducer definedProjectCouProject Count DescriptionProducer definedFinal 2014 countsUnknownProducer definedTypeSource Data TypeProducer definedStitched ImagesSource Data TypeProducer definedSubFolderFolder structure, sub folderProducer defined{Null Value / Empty Field Entry}UnknownProducer definedcol_219003_2014UnknownProducer definedcol_219038_2014UnknownProducer definedcol_219041_2014UnknownProducer definedcol_2430281_2014UnknownProducer definedcol_270000.2_2014UnknownProducer definedcol_270000.5_2014UnknownProducer definedcol_270024_2014UnknownProducer definedcol_270052_2014UnknownProducer definedcol_270053_2014UnknownProducer definedcol_270054_2014UnknownProducer definedcol_270069_2014UnknownProducer definedcol_270083_2014UnknownProducer definedcol_270103_2014UnknownProducer definedfeature classesUnknownProducer definedFilenameFilename assigned to the image mosaic. 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Complex.Producer defined{Null Value / Empty Field Entry}UnknownProducer definedCentral OregonUnknownProducer definedNorthern OregonUnknownProducer definedSouthern Oregon and Northern CaliforniaUnknownProducer definedstrJurisdiJuristiction of the islandProducer defined{Null Value / Empty Field Entry}UnknownProducer definedStateUnknownProducer definedUSFWSUnknownProducer definedstrUSFWSReNational Wildlife Refuge NameProducer defined{Null Value / Empty Field Entry}UnknownProducer definedCAPE MEARES NATIONAL WILDLIFE REFUGEUnknownProducer definedOREGON ISLANDS NATIONAL WILDLIFE REFUGEUnknownProducer definedTHREE ARCH ROCKS NATIONAL WILDLIFE REFUGEUnknownProducer defineddblLatitudLatitudeProducer defined045.94632dblLongituLongitudeProducer defined-124.6059890 The entity and attribute information provided here describes the true color digital photography mosaics produced to support bird counts. Collection level metadata – created by USFWS – consists of only one metadata record describing the overall series of image mosaics developed during a project. Product level metadata – created by USFWS - will refer to individual mosaics. These records will be populated with information that generally varies per mosaic, such as colony and may include subidentifiers (e.g. a,b,c,d...) information. A summary table of sites included in each years collection of mosaics will be included in the dataset description. The entity and attribute information was generated by the USFWS. Please review the rest of the metadata record for additional details and information.U.S. Fish and Wildlife ServiceShawn W. StephensenWildlife BiiologistMailing and Physical

2127 SE Marine Science Drive

Oregon Coast National Wildlife Refuge Complex

NewportOregon97365USA(541) 867-4550shawn_stephensen@fws.govThe United States Fish and Wildlife Service (Service) shall not be held liable for improper or incorrect use of the data described and/or contained herein. While the Service makes every reasonable effort to ensure the accuracy and completeness of data provided for distribution, it may not have the necessary accuracy or completeness required for every possible intended use. The Service recommends that data users consult the associated metadata record to understand the quality and possible limitations of the data. The Service creates metadata records in accordance with the standards endorsed by the Federal Geographic Data Committee. As a result of the above considerations, the Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of the data. It is the responsibility of the data user to use the data in a manner consistent with the limitations of geospatial data in general and these data in particular. Although these data have been processed successfully on a computer system at the Service, no warranty, expressed or implied, is made regarding the utility of the data on another system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This applies to the use of the data both alone and in aggregate with other data and information. Full metadata including a geospatial representation of mosaics in the collection are available on FWS Service Catalog (ServCat) at https://ecos.fws.gov/ServCat/Reference/Profile/130256. Due to the size of the dataset, these images are available on request. The entire collection is stored on the FWS Enterprise Data Workshop (EDW). Image files are organized by Year and Colony ID. Directories were formed to organize images and may include raw single slide scan, and stitched images (if made). 20210205Shawn StephensenU.S. Fish and Wildlife ServiceData ManagerMailing and Physical

2127 SE Marine Science Drive

Oregon Coast National Wildlife Refuge Complex

NewportOregon97365USA(541) 867-4550shawn_stephensen@fws.govFGDC Content Standard for Digital Geospatial MetadataFGDC-STD-001-1998local timeShawn StephensenU.S. Fish and Wildlife ServiceData Manager(541) 867-4550Oregon Coast National Wildlife Refuge Complex2127 SE Marine Science DriveNewportOregon97365USshawn_stephensen@fws.gov20210205ArcGIS Metadata1.0Shawn W. StephensenU.S. Fish and Wildlife ServiceWildlife Biiologist(541) 867-45502127 SE Marine Science DriveOregon Coast National Wildlife Refuge ComplexNewportOregon97365USshawn_stephensen@fws.govFull metadata including a geospatial representation of mosaics in the collection are available on FWS Service Catalog (ServCat) at https://ecos.fws.gov/ServCat/Reference/Profile/130256. Due to the size of the dataset, these images are available on request. The entire collection is stored on the FWS Enterprise Data Workshop (EDW). Image files are organized by Year and Colony ID. Directories were formed to organize images and may include raw single slide scan, and stitched images (if made).https://ecos.fws.gov/ServCat/Reference/Profile/1302540.897ShapefileOregon Islands National Wildife Refuge: Aerial Photography for Seabird Monitoring, 2014 Stitched Images Collection2020-12-31Oregon Islands National Wildlife RefugeU.S. Fish and Wildlife ServiceNewport, OregonU.S. Fish and Wildlife ServiceVector Digital Data Set (Point)IR 9: Oregon Coast: Aerial Photography of Nesting Seabird Colony Islands for Monitoring PurposesJune 3-4, 2014 on digital camera. Primarily captured from a helicopter roughly 800-900' in altitude, Right Front Photographer - Shawn Stephensen, USFWS, Right Rear Photographer - Bill Bridgeland, USFWS. Oregon Coast National Wildlife Refuge Complex manages an Aerial Photography Program for collecting refuge-wide aerial imagery datasets that are used to monitor nesting seabirds on offshore islands. Aerial flights are generally conducted annually to monitor population status and trends, but the imagery has been used for other resource monitoring purposes. These photos were captured at very high resolutions and have about 1-foot pixel (ground) resolution. Please note that these photos have not been georeferenced. The photos have not been orthorectified and therefore there will be photo anomalies and mis-matches between adjoining photos. Caution should be exercised if attempting to use this imagery to conduct measurements. After images were selected for best quality, in some cases, colony-wide, or larger sections of large islands were stitched (mosaiced), to help in the seabird counting process. This metadata record is for the stitched images only.Aerial photography has served as the primary means for monitoring populations of nesting seabirds, and the subsequent analysis of long-term seabird colony legacy data in the Pacific Northwest as a regional baseline. The 2014 set of photographs have a completed refuge- wide colony count for 2014, where each photograph has a hand count of nesting seabirds stored in a geodatabase format. For more information about the long-term monitoring of seabirds along the Oregon Coast, go to The Service Catalog (ServCat) at the following link: https://ecos.fws.gov/ServCat/Reference/Profile/125347U.S. Fish and Wildlife Service, Oregon Islands National Wildlife RefugeShawn W. StephensenU.S. Fish and Wildlife ServiceWildlife Biologist(541) 867-45502127 SE Marine Science DriveOregon Coast National Wildlife Refuge ComplexNewportOregon97365USshawn_stephensen@fws.govSouthern Oregon CoastalRock IslandsNorthern Oregon CoastalMarineCommon geographic areasNational Wildlife RefugeUSFWSbiotaISO 19115 Topic CategorySeabirdsTargetlong-term ecological monitoringaerial photographyimage collectionsUSGS ThesaurusBirdsData Categories for Marine PlanningSouthern Oregon CoastalBirdsbiotaRock IslandsSeabirdsNational Wildlife Refugelong-term ecological monitoringNorthern Oregon Coastalaerial photographyMarineimage collectionsThe United States Fish and Wildlife Service (Service) shall not be held liable for improper or incorrect use of the data described and/or contained herein. While the Service makes every reasonable effort to ensure the accuracy and completeness of data provided for distribution, it may not have the necessary accuracy or completeness required for every possible intended use. The Service recommends that data users consult the associated metadata record to understand the quality and possible limitations of the data. The Service creates metadata records in accordance with the standards endorsed by the Federal Geographic Data Committee. As a result of the above considerations, the Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of the data. It is the responsibility of the data user to use the data in a manner consistent with the limitations of geospatial data in general and these data in particular. Although these data have been processed successfully on a computer system at the Service, no warranty, expressed or implied, is made regarding the utility of the data on another system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This applies to the use of the data both alone and in aggregate with other data and information.None. Digital images (scanned slides) are organized by Year and Colony ID. Directories were formed to organize stitched images. These images are available through the FWS Enterprise Data Workshop (EDW), and full metadata for collection and individual photograph level metadata are available at https://ecos.fws.gov/ServCat/Reference/Profile/128389. This geospatial representation was generated to show the spatial extent of the photography (mosaic) series. Photographs (and subsequent stitched mosaics are not georeferenced). Digital images can be provided upon request.Not for navigation.This data is intended to make results of research available at the earliest possible date, but is not intended to constitute final or formal publication. The U.S. Fish and Wildlife makes every effort to provide virus-free files but does not guarantee uncorrupted files. The U.S. Fish and Wildlife does not guarantee this data to be free from errors, inaccuracies, or viruses, and disclaims any responsibility or liability for interpretations or decisions based on this data.IR 9: Oregon Coast: Aerial Photography of Nesting Seabird Colony Islands for Monitoring Purposes2020-12-31U.S. Fish and Wildlife ServiceU.S. Fish and Wildlife ServiceNewport, OregonOregon Islands National Wildlife RefugeOngoing Projecthttps://ecos.fws.gov/ServCat/Reference/Profile/125356 Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9273-124.605988995-123.95946695242.093004928945.9463195868ground condition2014-06-042014-06-03This metadata record was written to cover stitched images from the 2014 flight. These stitched island-wide mosaics are made of the best quality images. The stitched island-wide mosaics can be found on the U.S. Fish and Wildlife's internal Enterprise Data Warehouse (EDW), and ServCat reference, https://ecos.fws.gov/ServCat/Reference/Profile/130254. It should be noted that all images from the 2014 flight are digital, and available upon request.1-124.605989-123.95946745.94632042.093005No formal logical accuracy tests were conducted.Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.No formal attribute accuracy tests were conducted.A formal accuracy assessment of the horizontal positional information in the data set has not been conducted.A formal accuracy assessment of the vertical positional information in the data set has either not been conducted, or is not applicable.Stitched images were joined with data from the Seabird Slide Catalog to gather photograph level metadata for the Stitched Images (those used to count seabirds). This tabulation was used to create a geospatial representation of the mosaics using colony's geospatial coordinates (center points) form the Seabird Colony Catalog.2020-12-31We stitched images together where possible in order to reduce the time required to both orient images on a colony and delineate areas to count. We compared stitched images created by two readily available software packages, Adobe Photoshop and Microsoft Image Composite Editor, to determine which we preferred. Photoshop included many image editing features such as distortion removal and a contrast slider tool in addition to a stitching function, but we found the processing time lengthy and resulting file size often prohibitively large. In contrast, the sole function of Image Composite Editor was to stitch images and in most cases, this program produced comparable or even superior stitches in much less time than Photoshop. As a result, we used Image Composite Editor whenever possible. Photoshop was utilized for some poor quality photos that Image Composite Editor could not process, as Photoshop allowed some manual manipulation of image placement in the final stitch. After photos were stitched together the resulting image was inspected for smooth transitions and seams. Stitched images were saved in either a JPG or TIFF format. Photos were imported into ArcMap (v10.5-10.6.1 depending on date and computer) to be counted. Images counted by the USFWS during the study period (1988-2014) prior to the Legacy Project, were stitched using Adobe Photoshop and processed/counted as Jpeg files. Stitched image headers, or single image if the entire island is covered in one photograph, are updated so that they will align with geodatabses if the project must be recreated.2019-12-31Stitched photo(s) of each colony were imported to a new ArcMap .mxd file and moved to the vicinity of the colony location using a georeferenced Oregon coast seabird colony layer and the georeferencing toolbar. MXD files are available by request, and are stored on the FWS Enterprise Data Warehouse (EDW).2020-12-31Image files are organized by Year and Colony ID. Directories were formed to organize stitched image (if made). These images are available through the FWS Enterprise Data Workshop (EDW).2020-12-31Images were selected from the principle Oregon coast seabird colony survey completed each year during 2 – 4 days in early- to mid-June. Although additional aerial photos were collected over multiple flights in some cases (e.g. partial survey completed in mid-July), the counts from these photos would not be comparable to other data given the difference in timing of the survey. From the pool of photographs available for each colony in each year, observers manually checked and selected the highest quality photos based upon a variety of factors including whether or not: •individual birds were distinguishable from each other •individual birds were distinguishable from the background, particularly in shadows caused by topographical features •individual birds were not blocked by other birds or topographical features •the image was part of a series of images that could be stitched together Selected slides from the inventory were reviewed for quality, and scored. The best images were selected for further processing and/or counts. Image Grading: We established a numerical grading scale based on absolute visual characteristic grading (Ludewig et al. 2010) to assess image quality of each colony counted. The following aspects were considered with respect to image grading: •Sharpness/contrast and distance: are individuals distinguishable? Are birds distinguishable from the background? •Coverage: is entire colony visible? Is topography obscuring birds? •Angle: are birds blocking other birds, are birds closest to photographer approximately the same size as those further away? Using the following grading scale, each counted image was given a grade which was entered into the Seabird Colony database along with the count record. Grading scale: 1.Excellent image quality: no limitations for counting 2.Good image quality: minimal limitations for counting 3.Sufficient image quality: moderate limitations for counting but no substantial loss of information 4.Restricted image quality: relevant limitations for counting, clear loss of information 5.Poor image quality: image not usable, loss of information Each colony count received one grade for image quality, regardless of the number of images included. For the 325 colony counts completed during the course of this project, the majority (n = 216; 66%) received an image grade of 2 or 3. A smaller number of colony count images received a grade of 1 (n = 50; 15%) or 4 (n = 59; 18%). Colony images received a grade of 5 on one occasion because the image quality was too poor to count.2018-12-31Sseabird colonies were photographed using digital camera systems. These were hand held cameras, one photographer in front of helicopter, one in back. Image is true color, and the images are generally stored in .JPG format. Images are currently stored in their native filenames (e.g.IMG_0170.JPG).2012-06-11Images were automatically assigned unique identifiers2009-06-14This metadata record serves as the record of stitched mosaics used to produce counts in 2014. This record will be updated as legacy files are located and archived.2018-12-31The images were captured in 2014, but a complete seabird count was not performed until images were scanned and processed in 2019.4800Digital photographyDigital hand-held aerial photography2020-12-31Oregon Islands National Wildlife RefugeU.S. Fish and Wildlife ServiceNewport, OregonRaster Digital Data (Aerial Imagery)https://ecos.fws.gov/ServCat/Reference/Profile/128389ground condition2014-06-032014-06-04datasetEPSG6.14(3.0.1)231