Lesser goldfinches are moving north

Warmer temperatures are leading these irrepressible golden-hued birds to expand their range in the USA

- Richard Pallardy

LESSER GOLDFINCHES WERE ONCE restricted to the south-western portions of the United States - they are common in California and Texas. The birds are present in areas of Arizona, Colorado and New Mexico and range into Central America as well. Now, the warming climate is pushing them north in significant numbers.