The study found that Lesser Goldfinch populations increased dramatically in Washington (110.5%), Idaho (66.3%), and Oregon (16.9%) between 2012 and 2022.

Climate and landscape modification facilitate range expansion in Spinus psaltria (Lesser Goldfinch) across the Pacific Northwest. Ornithology, 2025; DOI: 10.1093/ornithology/ukaf013 ...

Maron and the team's study determined that lesser goldfinch populations increased by 110.5% in Washington, 66.3% in Idaho, and 16.9% in Oregon between 2012 and 2022, as stated in the journal ...

The study found that Lesser Goldfinch populations increased dramatically in Washington (110.5%), Idaho (66.3%), and Oregon (16.9%) between 2012 and 2022.

Lesser goldfinches (“lesser” because they are smaller than American goldfinches) can be found throughout the West, from as far north as Oregon, east to Oklahoma and Texas, and southward ...

Once lesser goldfinches arrive in a new place, they tend to stick around. According to data from the citizen science platform eBird, since 2012 their numbers have increased by 17% in Oregon, 66.3% ...

The study showed that the numbers of Lesser Goldfinch increased dramatically in Washington state by 110.5%, in Idaho by 66.3%, and to a lesser extent, in Oregon as well, which saw a 16.9% increase in ...