Joseph P. Fleskes unknown vector digital data ftp://ftp.dfg.ca.gov/BDB/GIS/BIOS/Public_Datasets/200_299/ds231.zip http://bios.dfg.ca.gov Using radio-telemetry, female northern pintail (Anas acuta) survival, distribution, and movements during late August-March in Central California were determined during 1991-92, 1992-93, and 1993-94. Accuracy of individual data fields has been reviewed. Data collection for 1991-94 is complete although additional years may be added. WHAT EACH RECORD REPRESENTS: Each record contains data about a duck's location, as well as information about the duck and hunting conditions at the time of observation. The purpose of this data set is to improve understanding of the ecology of northern pintails in California and serve as baseline data on which to measure impacts of changes in the Central Valley landscape on pintail ecology. DATA ASSUMPTIONS AND LIMITATIONS: All UTM coordinates for the points used in these data were generated using NAD27, Zone 10 datum although a number of points were in Zone 11. These data were converted to NAD83, Zone 10 datum and to Teale Albers projection for display on the BIOS site. Any error due to using Zone 10 datum instead of Zone 11 datum should be minimal considering the nature of the study. Positional accuracy of individual locations is limited by: uncertainty in telemetry locations (observer error) and possible data entry errors. Although all reasonable attempts have been made to limit these factors, positional accuracy for any individual point should not necessarily be considered minimal. The appropriateness of multiple scales of inference is the end-user's responsibility to justify and the originators assume no responsibility for incorrect or misleading uses of these data. METHODS: The study was organized and conducted by staff from the U.S. Geological Survey, Western Ecological Research Center. Pintails were captured with rocket nets and females radio tagged during 29 August-6 October 1991, 31 August-5 October 1992, and 28 August-25 September 1993 in the Tulare Basin (n = 42 AHY, 20 HY), Mendota State Wildlife Area (n= 71 AHY, 47 HY), and the Grassland Ecological Area (n = 115 AHY, 124 HY). Radio transmitters (20-21 gram) with back-mounted harnesses were attached in 1991 (n = 115) and 1992 (n = 123), but in 1993, either harness (n = 98) or 8 gram spear-suture transmitters (n = 83) were attached. Using telemetry systems mounted in vehicles or aircraft, status (location, alive, or dead) of each pintail was determined 1-2 times a day during the hunting season and at least every other day during non-hunting intervals in San Joaquin Valley, and at least weekly in other Central California areas from the date of the first pintail capture until 20 March each year (202-205 days). Other areas, including northeastern, coastal, and Salton Sea California; Malheur National Wildlife Refuge vicinity, Willamette and Klamath Basins in Oregon; the Carson sink in Nevada; and the western coast of Mexico, were also searched 1-10 times each winter to locate pintails not found in Central California. Two bearings from known locations were obtained using a truck-mounted dual-Yagi null-peak telemetry system to minimize time between bearings and because preliminary tests showed more bearings did not increase accuracy in our flat, open study areas. Pintail locations were calculated using a modified version of XYLOG and UTMTEL (Dodge and Steiner 1986). REFERENCE: Dodge, W. E., and A. J. Steiner. 1986. XYLOG:A computer program for field processing locations of radio-tagged wildlife. U.S. Fish and Wildlife Service Technical Report 4. 19910101 19940101 publication date Planned Irregular -122.557667 -115.027638 41.977982 33.097259 None Anas acuta telemetry northern pintail ISO 19115 Topic Category environment biota None California Grasslands Ecological Area Central Valley San Joaquin Valley None winter None If the information is used, credit should be given to the US Geological Survey, Western Ecological Research Center, Dixon Field Station Western Ecological Research Center, U.S. Geological Survey Joseph P. Fleskes Research Wildlife Bioloogist mailing and physical

6924 Tremont Road

Dixon CA 95620 US (707) 678-0682 ext. 628 (707) 678-5039 joe_fleskes@usgs.gov Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.1.4959 Vector Entity point 36928 NAD 1983 California Teale Albers 34.0 40.5 -120.0 0.0 0.0 -4000000.0 coordinate pair 0.000000003754707655900803 0.000000003754707655900803 meter D North American 1983 GRS 1980 6378137.0 298.257222101 ds231 FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. LOCATION One of 201 combinations of a region and an area which constitute the location for each record. Pintail_ID Easting Northing Status Feature geometry. ESRI Coordinates defining the features. Quality Date_ Time_PST Reg_Area Day Season Shoot Age Sex Shape Feature geometry. ESRI Coordinates defining the features. PINTAIL_ID Unique identifier for each pintail. AGE Age of the bird. A Adult. I Immature, less than 1 year. STATUS Status of bird at the location. A Alive. B Radio fell off, bird probably alive. C Capture location. D Disease mortality. F Flightless (likely molter if pre-season, cripple if during). G Gone, radio OK, bird migrated out of area. H Hunter shot and retrieved bird with working radio. I Illegal kill/kill out of season. J Died due to collision with power line, fence, etc. K Probable hunter shot and lost. L Lost hunter shot. O Probable hunter shot, bird retrieved, radio tossed. P Predator kill. Q Radio quit. S Sick or moribund. T Tossed bird (from hunter). V Hunter shot and retieved bird with radio that failed earlier. W Weak but can fly. X Status unknown. Y Flying. Z Alive, but bizarre signal. 0-9 Alive, starting and ending locations of bird flights (only used for birds monitored for several hours). QUALITY Location quality. CAPTUR Location where bird was radio-tagged. FLYGEN General location from aircraft. FLYPIN Pinpoint location from aircraft. MORTAL Mortality location. TRKGEN General location from truck. TRKGOD Pinpoint location from truck. DATE_ Date of location information. DAY Day of the week. SEASON Codes denote whether date was in hunting season or not. PREHUNT Bird was located before the hunting season began. HUNT1 Bird was located during first hunting season. SPL NOH Bird was located during a non-hunting period between two hunting seasons. HUNT2 Bird was located during the second hunting season. POSTHUNT Bird was located after the hunting season had closed. SHOOT Denotes whether the date of location was a shoot day or not (even during hunting season, not all days are legal hunting days. Generally, Wednesdays, Saturdays, and Sundays are legal hunting days). Shoot Day was a legal hunting day. Noshoot Day was not a legal hunting day. EASTING Easting for location UTM Zone 10 NAD27. NORTHING Northing for location UTM Zone 10 NAD 27. LOC_CODE Four-character code, where the first two characters denote the region, and the last two characters denote the area within the region. Full location given in Location. OID_ Western Ecological Research Center, U.S. Geological Survey Joseph P. Fleskes Research Wildlife Biologist mailing and physical

6924 Tremont Road

Dixon CA 95620 US (707) 678-0682 ext. 628 (707) 678-5039 joe_fleskes@usgs.gov See access and use constraints information. 20160229 Western Ecological Research Center, U.S. Geological Survey William Perry IT/GIS Specialist mailing and physical

6924 Tremont Road

Dixon CA 95620 US (707) 678-0682 ext. 619 (707) 678-5039 william_perry@usgs.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time