| Autor: |
Andrew Caven, Hillary Thompson, David Baasch, Barry Hartup, Amanda Hegg, Stephanie Schmidt, Irvin Louque, Craig Allen, Carter Crouch, Craig Davis, Joel Jorgensen, Jane Austin, Bethany Ostrom, Richard Beilfuss, George Archibald, Anne E. Lacy |
| Rok vydání: |
2023 |
| DOI: |
10.22541/au.168252698.80347818/v1 |
| Popis: |
The Whooping Crane (Grus americana; WHCR) is a large, long-lived bird endemic to North America. The remnant population migrates between Aransas National Wildlife Refuge, USA, and Wood Buffalo National Park, Canada (AWBP), and has recovered from a nadir of 15-16 birds in 1941 to ~540 birds in 2022. Two ongoing reintroduction efforts in Louisiana and the Eastern Flyway together total ~150 birds. Evidence indicates the U.S. Fish and Wildlife Service (USFWS) is strongly considering downlisting the species from an endangered to a threatened status under the Endangered Species Act (ESA). We examined the current status of the WHCR through the lens of ESA threat factors, the USFWS’s Species Status Assessment (SSA) framework, and other avian downlisting actions to determine if the action is biologically warranted. Our research indicates that WHCRs are facing an intensification of most threat drivers across populations and important ranges. The AWBP is still relatively small compared to other crane species and most birds of conservation concern. To date, only one avian species has been downlisted from an endangered status with an estimated population of |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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