20240207 vector digital data https://wildlife.ca.gov/Data/BIOS https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/3100_3199/ds3146.zip California least tern colonies are monitored during nesting season along the California Coast and data is reported to California Department of Fish and Wildlife. The colonies in this dataset range from the Tijuana river mouth near the Mexico border to Sacramento. Locations and data include both present and historic sites. Locations are approximate and can have variation over time. These approximate locations were overlaid with a statewide hexagon layer (ds675) and then a buffer was created in order to mask exact nesting locations. Some additional sites without location information can be found in the related table. The related table includes nesting data by year from 1990 - 2019. It's anticipated to update this dataset to include earlier and newer records. Monitoring data includes estimated fledglings, estimated breeding pairs, total number of nests, and predator information when included in site reports. Annual reports 2017 and earlier can also be found by searching in California Department of Fish and Wildlife's document library (nrm.dfg.ca.gov/documents/docViewer.aspx).A version of this data, summarized by region, has been made available in BIOS as California Least Tern Monitoring Sites by Region [ds3147]. This is a publicly available dataset. This dataset tracks the distribution of California least tern colonies along the California Coast. Colonies are monitored annually during the nesting season and data is reported to California Department of Fish and Wildlife. 19900401 20190701 Tijuana river mouth to Sacramento. In work Annually -122.369686 -115.342210 38.476788 32.486053 None Sternula antillarum browni estuary nesting least tern breeding beach California Least Tern environment coast biota colony tern productivity chronology reproduction bird ISO 19115 Topic Categories biota environment None California, Coast None California Department of Fish and Wildlife must be notified of any publications that result in use of this data. For questions regarding specific data, please contact Hans Sin (Hans.Sin@wildlife.ca.gov) or Kyle Rice (Kyle.Rice@wildlife.ca.gov).License: This work is licensed under Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). Using the citation standards recommended for BIOS datasets (https://www.wildlife.ca.gov/Data/BIOS/Citing-BIOS) satisfies the attribution requirements of this license.Disclaimer: The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data. California Department of Fish and Wildlife Hans Sin Senior Environmental Scientist (Supervisory) hans.sin@wildlife.ca.gov California Department of Fish and Wildlife Kyle Rice Environmental Scientist kyle.rice@wildlife.ca.gov California Department of Fish and Wildlife Hans Sin Senior Environmental Scientist (Supervisory) hans.sin@wildlife.ca.gov California Department of Fish and Wildlife Kyle Rice Environmental Scientist kyle.rice@wildlife.ca.gov U.S. Fish and Wildlife Service, Department of Defense, CA Department of Parks and Recreation, Orange County Water District, Point Blue Conservation Science, San Francisco Bay Bird Observatory, East Bay Regional Park District, Santa Ana Watershed Association, San Diego Zoo Wildlife Alliance, Ryan Ecological Consulting, San Diego Audubon Society, Los Angeles Audubon Society, and Ventura Audubon Society. For records 2017 and earlier, see annual report (go to https://nrm.dfg.ca.gov/documents/DocViewer.aspx and search for least tern) or contact Hans Sin (Hans.Sin@wildlife.ca.gov) and Kyle Rice (Kyle.Rice@wildlife.ca.gov). Microsoft Windows 10 Version 10.0 (Build 19045) ; Esri ArcGIS 13.1.0.41833 Vector GT-polygon composed of chains 49 NAD 1983 California Teale Albers 34.0 40.5 -120.0 0.0 0.0 -4000000.0 coordinate pair 0.0001 0.0001 meter D North American 1983 GRS 1980 6378137.0 298.257222101 ds3146 California Dept. of Fish and Wildlife OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Feature geometry. Esri Coordinates defining the features. Site_ID Site_Name REGION State broken in 4 main regions: S.F. Bay, Central, Ventura, and Southern. Two additional polygons are separated for inland records for Kings and Sacramento. California Dept. of Fish and Wildlife Shape_Length Length of feature in internal units. Esri Positive real numbers that are automatically generated. Shape_Area Area of feature in internal units squared. Esri Positive real numbers that are automatically generated. ds3146 External Table California Dept. of Fish and Wildlife OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Year Year of the breeding season. California Dept. of Fish and Wildlife ANNUAL_REPORT_SITE_NAME Name of the site as it was reported in given year. California Dept. of Fish and Wildlife CURRENT_SITE_NAME Current site name. California Dept. of Fish and Wildlife SITE_NAME_ABBR Site name abbreviation. California Dept. of Fish and Wildlife REGION State broken in 4 main regions: S.F. Bay, Central, Ventura, and Southern. Two additional polygons are separated for inland records for Kings and Sacramento. California Dept. of Fish and Wildlife Index_site Sites recommended for use in statewide analysis due to their relatively consistent monitoring and lack of major site changes that would affect comparisons through time. California Dept. of Fish and Wildlife ENSO_Event El Nino Southern Oscillation (ENSO) event for the given year based on NOAA Physical Science Laboratory’s Extended Multivariate ENSO Index. See https://psl.noaa.gov/enso/past_events.html. BP_Min Reported minimum breeding pairs. Where single number is reported, entered for both min and max. California Department of Fish and Wildlife BP_MAX Reported maximum breeding pairs. Where single number is reported, entered for both min and max. California Dept. of Fish and Wildlife FL_MIN Reported minimum fledges. Where single number is reported, entered for both min and max. California Dept. of Fish and Wildlife FL_MAX Reported maximum fledges. Where single number is reported, entered for both min and max. California Dept. of Fish and Wildlife TOTAL_NESTS Total nests reported. When range provided, max nests included. California Dept. of Fish and Wildlife NONPRED_EGGS Total of all four types of reported non-predator related mortalities of eggs (damaged, flooding, abandoned pre-term, abandoned post-term). If some but not all cells in row were left blank, typically assume blanks are zeros and record sum of the numbers that are recorded. Eggs of unknown fate not included. If range provided, used lowest value. California Dept. of Fish and Wildlife NONPRED_CHICKS Total reported non-predator related mortalities of chicks. If range provided, used lowest value. California Dept. of Fish and Wildlife NONPRED_FL Total reported non-predator related mortalities of fledges. If range provided, used lowest value. California Dept. of Fish and Wildlife NONPRED_AD Total reported non-predator related mortalities of adults. If range provided, used lowest value. California Dept. of Fish and Wildlife PRED_CONTROL Site predator control (Y/N). Not widely reported (including negative data) until 2011. If only provided for some subsites, marked Y since typically the subsites that had no predation control also didn't have nesting. California Dept. of Fish and Wildlife PRED_EGGS Total reported (documented and suspected) predator related mortalities of eggs. If range provided, used lowest value or entered 1 if range included 0. California Dept. of Fish and Wildlife PRED_CHICKS Total reported (documented and suspected) predator related mortalities of chicks. If range provided, use lowest value or entered 1 if range included 0. California Dept. of Fish and Wildlife PRED_FL Total reported (documented and suspected) predator related mortalities of fledges. If range provided, use lowest value or entered 1 if range included 0. California Dept. of Fish and Wildlife PRED_AD Total reported (documented and suspected) predator related mortalities of adults. If range provided, use lowest value or entered 1 if range included 0. California Dept. of Fish and Wildlife PRED_PEFA Suspected and documented predation by peregrine falcon, Y/N. California Dept. of Fish and Wildlife PRED_COY_FOX Suspected and documented predation, Y/N; includes coyote and fox spp.; excludes canine spp. domestic and feral dog. California Dept. of Fish and Wildlife PRED_MESO Suspected and documented predation, Y/N; includes mesocarnivores such as feral and domestic dogs/cats, skunk, opossum, raccoon, weasel, etc. California Dept. of Fish and Wildlife PRED_OWLSPP Suspected and documented predation, Y/N; incudes all owl species. California Dept. of Fish and Wildlife PRED_CORVID Suspected and documented predation, Y/N; includes common raven and American crow. California Dept. of Fish and Wildlife PRED_OTHER_RAPTOR Suspected and documented predation, Y/N; includes all raptor species not accounted for in other columns (excludes PEFA + OWLSPP). California Dept. of Fish and Wildlife PRED_OTHER_AVIAN Suspected and documented predation, Y/N; includes all other avian species (excludes all raptors and corvids). California Dept. of Fish and Wildlife PRED_MISC Suspected and documented predation, Y/N; includes all other species not accounted for in previous columns, including 'unidentified' or 'unknown'. California Dept. of Fish and Wildlife TOTAL_PEFA Total egg, chick, fledge, and adult mortalities attributed to PEFA. California Dept. of Fish and Wildlife TOTAL_COY_FOX Total egg, chick, fledge, and adult mortalities attributed to coyotes and foxes. California Dept. of Fish and Wildlife TOTAL_MESO Total egg, chick, fledge, and adult mortalities attributed to mesocarnivores such as feral and domestic dogs/cats, skunk, opossum, raccoon, weasel. California Dept. of Fish and Wildlife TOTAL_OWLSPP Total egg, chick, fledge, and adult mortalities attributed to owl spp. California Dept. of Fish and Wildlife TOTAL_CORVID Total egg, chick, fledge, and adult mortalities attributed to corvid spp. California Dept. of Fish and Wildlife TOTAL_OTHER_RAPTOR Total egg, chick, fledge, and adult mortalities attributed to raptor species not accounted for in previous columns (excludes PEFA + OWLSPP). California Dept. of Fish and Wildlife TOTAL_OTHER_AVIAN Total egg, chick, fledge, and adult mortalities attributed to any other avian species not accounted for in previous columns (excludes raptors and corvids). California Dept. of Fish and Wildlife TOTAL_MISC Total egg, chick, fledge, and adult mortalities attributed to any other species not accounted for in previous columns, including 'unidentified' or 'unknown'. California Dept. of Fish and Wildlife FIRST_OBSERVED Date CLTE first observed. When range of dates reported, earliest used. California Dept. of Fish and Wildlife LAST_OBSERVED Date CLTE last observed. When range of dates reported, latest used. California Dept. of Fish and Wildlife FIRST_NEST Date first egg detected. When range of dates reported, earliest used. Prior to 1997, date of first egg used. California Dept. of Fish and Wildlife FIRST_CHICK Date first chick detected, some years reported as date of first hatch. When range of dates reported, earliest used. California Dept. of Fish and Wildlife FIRST_FLEDGE Date first fledge detected. When range of dates reported, earliest used. California Dept. of Fish and Wildlife Applies to all fields. NRNA = Not Reported/Not Applicable. Includes fields where data was not entered, was not entered consistently for all subsites, does not apply, or was not included due to uncertainty in the reported data accuracy (e.g., same date reported for date of first fledge and date of first chick). 20240207 California Department of Fish and Wildlife Kyle Rice Environmental Scientist kyle.rice@wildlife.ca.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time