The Distribution and Reproductive Success of the Western Snowy Plover along the Oregon Coast - 2012

From 5 April – 21 September 2012 we monitored the distribution, abundance and productivity of the federally Threatened Western Snowy Plover (Charadrius nivosus nivosus) along the Oregon coast. From north to south, we surveyed and monitored plover activity at Sutton Beach, Siltcoos River estuary, the Dunes Overlook, North Tahkenitch Creek, Tenmile Creek, Coos Bay North Spit, Bandon Snowy Plover Management Area, New River HRA and adjacent lands, and Floras Lake. Our objectives for the Oregon coastal population in 2012 were to: 1) estimate the size of the adult Snowy Plover population, 2) locate plover nests, 3) determine nest success, 4) use mini-exclosures (MEs) to protect nests from predators as needed, 5) determine fledging success, 6) monitor brood movements, 7) collect general observational data about predators, and 8) evaluate the effectiveness of predator management. We observed an estimated 290-91 adult Snowy Plovers; a minimum of 231-238 individuals was known to have nested. The adult plover population was the highest estimate recorded since monitoring began in 1990. We monitored 314 nests in 2012; the highest number of nests since monitoring began in 1990. Overall apparent nest success was 45%. Exclosed nests (n = 22) had an 82% apparent nest success rate, and unexclosed nests (n = 289) had a 42% apparent nest success rate. Nest failures were attributed to unknown depredation, unknown cause, corvid depredation, abandonment, one egg nests, wind/weather, mammalian depredation, overwashing, adult plover depredation, and infertility. We monitored 154 broods, including 11 from unknown nests, and documented a minimum of 173 fledglings. Overall brood success was 70%, fledging success was 43%, and 1.37 fledglings per male were produced. Continued predator management, habitat improvement and maintenance, and management of recreational activities at all sites are recommended to achieve recovery goals

The Distribution and Reproductive Success of the Western Snowy Plover Along the Central and Southern Oregon Coast - 2023

We monitored the distribution, abundance and productivity of the federally threatened Western Snowy Plover (Anarhynchus nivosus nivosus) along the central and south coast of Oregon from 4 April – 15 September 2023. We surveyed and monitored plover activity in a project area that included, from north to south, Sutton Beach, Siltcoos River estuary, the Dunes Overlook, North Tahkenitch Creek, Tenmile Creek, Coos Bay North Spit, Bandon Snowy Plover Management Area, New River Habitat Restoration Area (HRA) and adjacent lands, and Floras Lake. Our objectives for the project area in 2023 were to: 1) estimate the size of the adult Snowy Plover population, 2) locate plover nests, 3) determine nest success, 4) implement nest protection as appropriate (e.g. ropes and signs), 5) monitor a sample of broods to determine brood fate and plover productivity, and 6) use cameras and observational data to document predator activity at nests. We estimated the resident number of Snowy Plovers in Oregon at 475 individuals, lower than in 2022. We monitored 567 nests in 2023. Overall apparent nest success was 34%. Nest failures were attributed to unknown depredation, harrier depredation, unknown avian depredation, corvid depredation, unknown cause, abandonment, mammalian depredation, one egg nest, gull depredation, wind/weather, overwashing, and infertility. We sampled 62 of 190 known broods that produced 87 fledglings and estimated 261 total fledglings. Using the sample, brood success was 86%, fledging success was 54%, and based on the overall number of resident males, 0.79 chicks fledged per resident male

The Distribution and Reproductive Success of the Western Snowy Plover along the Oregon Coast - 2015

We monitored the distribution, abundance and productivity of the federally threatened Western Snowy Plover (Charadrius nivosus nivosus) along the Oregon coast from 3 April – 11 September 2015. From north to south, we surveyed and monitored plover activity at Sutton Beach, Siltcoos River estuary, the Dunes Overlook, North and South Tahkenitch Creek, Tenmile Creek, Coos Bay North Spit, Bandon Snowy Plover Management Area, New River HRA and adjacent lands, and Floras Lake. Our objectives in 2015 were to: 1) estimate the size of the adult Snowy Plover population along the Oregon coast, 2) locate plover nests, 3) determine nest success, 4) implement nest protection as appropriate (e.g. ropes, signs, exclosures), 5) determine fledging success, 6) monitor brood movements, and 7) collect general observational data about predators. We estimate the Snowy Plover breeding population in Oregon at 449 individuals; a minimum of 376 individuals were known to have nested. The adult plover population was the highest estimate recorded since monitoring began in 1990. We monitored 501 nests in 2015. Overall apparent nest success was 48%. Nest failures were attributed to unknown cause, unknown depredation, mammalian depredation, corvid depredation, abandonment, wind/weather, one-egg nests, harrier depredation, infertility, overwashing, gull depredation and human caused. We monitored 271 broods, including 32 from unknown nests, and documented a minimum of 333 fledglings. Overall brood success was 75%, fledging success was 49%, and 1.51 fledglings per male were produced.Interim report for USFWS agreement #F14AC00547Final report for BLM agreement # L10AC20515Interim report for BLM agreement # L15AC00045Final report for USFS agreement #AG-04T0-P-14-0029Interim report for USFS agreement # AG-04T0-P-15-0034Final report for ODFW agreement # 478-14Final report for OPRD agreement # 670

The Distribution and reproductive success of the Western Snowy Plover along the Oregon Coast - 2012

From 5 April – 21 September 2012 we monitored the distribution, abundance and productivity of the federally Threatened Western Snowy Plover (Charadrius nivosus nivosus) along the Oregon coast. From north to south, we surveyed and monitored plover activity at Sutton Beach, Siltcoos River estuary, the Dunes Overlook, North Tahkenitch Creek, Tenmile Creek, Coos Bay North Spit, Bandon Snowy Plover Management Area, New River HRA and adjacent lands, and Floras Lake. Our objectives for the Oregon coastal population in 2012 were to: 1) estimate the size of the adult Snowy Plover population, 2) locate plover nests, 3) determine nest success, 4) use mini-exclosures (MEs) to protect nests from predators as needed, 5) determine fledging success, 6) monitor brood movements, 7) collect general observational data about predators, and 8) evaluate the effectiveness of predator management. We observed an estimated 290-91 adult Snowy Plovers; a minimum of 231-238 individuals was known to have nested. The adult plover population was the highest estimate recorded since monitoring began in 1990. We monitored 314 nests in 2012; the highest number of nests since monitoring began in 1990. Overall apparent nest success was 45%. Exclosed nests (n = 22) had an 82% apparent nest success rate, and unexclosed nests (n = 289) had a 42% apparent nest success rate. Nest failures were attributed to unknown depredation, unknown cause, corvid depredation, abandonment, one egg nests, wind/weather, mammalian depredation, overwashing, adult plover depredation, and infertility. We monitored 154 broods, including 11 from unknown nests, and documented a minimum of 173 fledglings. Overall brood success was 70%, fledging success was 43%, and 1.37 fledglings per male were produced. Continued predator management, habitat improvement and maintenance, and management of recreational activities at all sites are recommended to achieve recovery goals.This report represents ORBIC's he 23rd year of monitoring the distribution, abundance, and productivity of Snowy Plovers along the Oregon coast during the breeding season. In cooperation with federal and state agencies, plover management has focused on habitat restoration and maintenance at breeding sites, non-lethal and lethal predator management, and management of human related disturbances to nesting plovers

Informe de Gobierno, agosto de 1998 - julio de 1999

Informe de Gobierno correspondiente al año 1998-1999, en el que se da cuenta de las principales acciones y logros de la institución durante el año en lo referente a programas educativos, investigación, vinculación y desarrollo institucional

The Distribution and Reproductive Success of the Western Snowy Plover along the Oregon Coast - 2014

We monitored the distribution, abundance and productivity of the federally threatened Western Snowy Plover (Charadrius nivosus nivosus) along the Oregon coast from 1 April – 15 September 2014. From north to south, we surveyed and monitored plover activity at Sutton Beach, Siltcoos River estuary, the Dunes Overlook, North and South Tahkenitch Creek, Tenmile Creek, Coos Bay North Spit, Bandon Snowy Plover Management Area, New River HRA and adjacent lands, and Floras Lake. Our objectives in 2014 were to: 1) estimate the size of the adult Snowy Plover population along the Oregon coast, 2) locate plover nests, 3) determine nest success, 4) use mini-exclosures (MEs) to protect nests from predators as needed, 5) determine fledging success, 6) monitor brood movements, and 7) collect general observational data about predators. We observed an estimated 338 adult Snowy Plovers; a minimum of 280 individuals were known to have nested. The adult plover population was the highest estimate recorded since monitoring began in 1990. We monitored 346 nests in 2014. Overall apparent nest success was 60%. Nest failures were attributed to unknown depredation, unknown cause, mammalian depredation, abandonment, wind/weather, one-egg nests, avian depredation, overwashed, infertility, and corvid depredation. We monitored 221 broods, including 12 from unknown nests, and documented a minimum of 272 fledglings. Overall brood success was 77%, fledging success was 48%, and 1.68 fledglings per male were produced

The Distribution and Reproductive Success of the Western Snowy Plover along the Oregon Coast - 2016

We monitored the distribution, abundance and productivity of the federally threatened Western SnowyPlover (Charadrius nivosus nivosus) along the Oregon coast from 5 April – 31 August 2016. From north to south, we surveyed and monitored plover activity at Sutton Beach, Siltcoos River estuary, the Dunes Overlook, North and South Tahkenitch Creek, Tenmile Creek, Coos Bay North Spit, Bandon Snowy Plover Management Area, New River HRA and adjacent lands, and Floras Lake. Our objectives in 2016 were to: 1) estimate the size of the adult Snowy Plover population, 2) locate plover nests, 3) determine nest success, 4) implement nest protection as appropriate (e.g. ropes, signs, exclosures), 5) develop and test a sampling technique to determine plover productivity, 6) monitor brood outcomes, and 7) collect general observational data about predators and use cameras to document predator activity at nests. We estimated the resident number of Snowy Plovers in Oregon at 518 individuals. The adult plover population was the highest estimate recorded since monitoring began in 1990. We monitored 694 nests in 2016. Overall apparent nest success was 25%. Nest failures were attributed to unknown depredation, unknown cause, harrier depredation, corvid depredation, mammalian depredation, gull depredation, one-egg nest, wind/weather, abandonment, overwashing and infertility. We monitored a sample of 150 of 192 known broods, and documented a minimum of 197 fledglings. Overall brood success was 71%, fledging success was 43%, but only 0.60 +/- 0.09 fledglings per male were produced.Interim report for USFWS agreement #F14AC00547Interim report for BLM agreement # L15AC00045Final report for USFS agreement #AG-04T0-P-15-0034Interim report for USFS agreement # AG-04T0-P-16-0007Final report for ODFW agreement # 129-16Final report for OPRD agreement # 670

The distribution and reproductive success of the Western Snowy Plover along the Oregon coast - 2013

From 26 March – 19 September 2013 we monitored the distribution, abundance and productivity of the federally Threatened Western Snowy Plover (Charadrius nivosus nivosus) along the Oregon coast. From north to south, we surveyed and monitored plover activity at Sutton Beach, Siltcoos River estuary, the Dunes Overlook, North and South Tahkenitch Creek, Tenmile Creek, Coos Bay North Spit, Bandon Snowy Plover Management Area, New River HRA and adjacent lands, and Floras Lake. Our objectives for the Oregon coastal population in 2013 were to: 1) estimate the size of the adult Snowy Plover population, 2) locate plover nests, 3) determine nest success, 4) use mini-exclosures (MEs) to protect nests from predators as needed, 5) determine fledging success, 6) monitor brood movements, 7) collect general observational data about predators, and 8) evaluate the effectiveness of predator management. We observed an estimated 304 adult Snowy Plovers; a minimum of 190-191 individuals was known to have nested. The adult plover population was the highest estimate recorded since monitoring began in 1990. We monitored 381 nests in 2013; the highest number of nests since monitoring began in 1990. Overall apparent nest success was 24%. Exclosed nests (n = 18) had an 83% apparent nest success rate, and unexclosed nests (n = 362) had a 21% apparent nest success rate. Nest failures were attributed to unknown depredation, unknown cause, avian depredation, corvid depredation, one-egg nests, wind/weather, abandonment, mammalian depredation, overwashed, infertility, and adult plover depredation. We monitored 101 broods, including eight from unknown nests, and documented a minimum of 103 fledglings. Overall brood success was 71%, fledging success was 39%, and 1.04 fledglings per male were produced. Continued predator management, habitat improvement and maintenance, and management of recreational activities at all sites are recommended to maintain recovery goals.Research report submitted by the Oregon Biodiversity Information Center, part of the Institute for Natural Resources. Report submitted to the Coos Bay District - Bureau of Land Management, U.S. Fish and Wildlife Service, Oregon Department of Fish and Wildlife, Oregon Parks and Recreation Department