Try your hand at sketching birds in the field. Start by capturing overall posture and shape, then take your time to fill in ...

COLORADO: A remarkable migration captures the attention ... That suggests the birds are stuck on calendar dates, Loss said.

Migrating birds can be divided into “calendar birds” and “weather ... many smaller birds make their first migration without a guide. It’s thought they inherit a kind of internal compass ...

Seasonal bird migration is a well-known and extensively studied phenomenon involving at least half of all species worldwide. It is a basic survival strategy: birds leave cold areas searching for ...