Recently I was searching for a bird identification. At the time I came across the Lesser Goldfinch. Even though they have a much smaller range than our American Goldfinches there are 2 distinct variations.
Digging into my archives I knew there were some untouched raw files I’ve never processed. They turned out to be the ‘western’ variation. Looking at a map of the ‘eastern’ versions habitat I have a hard time finding where they separate.
Both species only live in the deep southwestern part of the USA. The eastern variation has a much darker head and chest.