Scientists simulated how drought conditions could change the song of Darwin’s medium ground finches by digitally modifying recordings to mimic what would happen as their beaks grew larger over ...
What a wonderful image of a purple finch, which is more red than purple. These northern birds live primarily in the coniferous forests of Canada and New England, but come south when food is scarce.
The study unveils how the long-tailed finch’s red and yellow bill colors sprouted from slight changes in a few vital genes. The genes are intricately involved in how birds process dietary yellow ...