(CN) – A construction project in Crimea turned into the discovery of one of the largest birds in history living among early Europeans, according to new research released Wednesday. The flightless ...

Birds across the Americas are getting smaller and longer-winged as the world warms, and the smallest-bodied species are changing the fastest. Birds across the Americas are getting smaller and ...

image: An analysis of a bird species' unique rasps shows how sound fluctuations in birds' songs might reveal details about birds' body sizes. view more An analysis of a bird species' unique rasps ...

Birds are getting smaller at a not-so-alarming rate. A study of more than 70,000 dead birds from 52 species between 1978 and 2016 found that every species has decreased in size, Reuters reported.

Dec. 4 (UPI) --Migratory songbirds in Illinois are no exception to Bergmann's rule, which posits specimens representing that same species tend to be smaller in warmer climates and bigger in colder ...