Volcán Arenal, Costa Rica
About Golden-winged Warbler (Vermivora chrysoptera)
For general information about Golden-winged Warbler life history, please visit Cornell Lab of Ornithology’s All About Birds species account.
Range and Abundance
For detailed information about Golden-winged Warbler range, abundance, and timing of movements, please visit Cornell Lab of Ornithology’s eBird Status and Trends page.
Current Golden-winged Warbler Range
In Canada, GWWA are a threatened species under Schedule 1 of Canada’s Species at Risk Act (SARA) and protected by the Migratory Bird Convention Act of 1994. Under provincial species at risk legislation, GWWA are designated as Special Concern in Ontario, and Likely to be Designated as Threatened or Vulnerable in Quebec.
- Near Threatened by International Union for Conservation of Nature (IUCN).
- Audubon Society Watchlist of Birds on Conservation Concern
- Partners in Flight Watch List Species in Need of Immediate Action
Breeding Population Trends and Estimates
Tracking Population Change
The Breeding Bird Survey is the most comprehensive monitoring program tracking Golden-winged Warbler population change rangewide. Because the BBS is a roadside survey, however, it may not adequately monitor response to changing conditions across all habitat types in North America—particularly if higher probability of land development results in disproportionately greater habitat loss along roadsides. The BBS appears to accurately track Golden-winged Warbler population trends throughout the northeastern and north-central states but may not be adequate in the Appalachians and parts of Canada.
Estimating Population Size
Although the BBS was designed to index population trend and not to estimate actual abundance, Partners in Flight collaborated with over a hundred ornithologists to devise a standardized method to use BBS data from the 1990s to estimate current population size of Golden-winged Warblers at multiple geographic scales.
Hover over each state or province to view the latest population trends¹ and estimates².
330,000 birds • -2.1% annual change • 84% of global population
63,000 birds • +1.3% annual change • 16% of global population
1 USGS Breeding Bird Survey: Pardieck, K.L., Ziolkowski Jr., D.J., Lutmerding, M., Aponte, V.I., and Hudson, M-A.R., 2020, North American Breeding Bird Survey Dataset 1966 -2019: U.S. Geological Survey data release.
2 Partners in Flight Population Estimate Database: Will, T., J.C. Stanton, K.V. Rosenberg, A.O. Panjabi, A.F. Camfield, A.E. Shaw, W.E. Thogmartin, and P.J. Blancher. 2020. Handbook to the Partners in Flight Population Estimates Database, Version 3.1.
Golden-winged Warbler declines are attributed to a variety of sources, including loss of breeding season habitat, hybridization with Blue-winged Warbler, and land use changes on the Neotropical wintering grounds. All of these threats, likely contribute to population-level declines, and the relative impact of each as a limiting factor remains unclear. Threats to the species appear to vary considerably across regions, although loss of early successional habitat has been identified as the primary threat on the breeding grounds, compounded in some areas by hybridization with Blue-winged Warbler.
Replacement by Blue-winged Warblers has occurred throughout much of the historic Golden-winged breeding range. In addition to competing for resources, Golden-winged and Blue-winged Warblers hybridize to produce viable offspring, causing genetic dilution.
photo: “Brewster’s” Warbler (Golden-winged x Blue-winged Warbler hybrid). Kurt Ongman
Land Trust Bird Conservation
Land trusts and private conservation organizations provide critical contributions to conserving birds by protecting undeveloped habitat for Golden-winged Warbler and hundreds of other bird species. Cornell Lab of Ornithology’s Land Trust Bird Conservation Initiative is a strategic and coordinated effort to maximize the benefits of land trusts and birds.
To learn more about Land Trust Bird Conservation, visit Cornell Lab’s Land Trust website.
To read about the success of Land Trust Bird Conservation, visit the Success Stories page.
Conservation Investment Strategies
The Power of Partnerships
Our Working Group is a network of biologists, landowners, and conservationists striving to ensure healthy Golden-winged Warbler populations and habitats into the future. Developing strong partnerships to share the latest science and management techniques is at the core of our organization.
Visit our projects page to learn how different Working Group projects are helping conserve Golden-winged Warbler.