Birds have evolved to fit particular environments. Eggs have evolved along with the birds. The eggs that birds will lay this spring will vary in shape and color to facilitate successful hatching in a ...

DEAR JOAN: We have cats so I don’t usually feed the birds, but we were given a little round birdseed holder that you hang in a tree. We hung it in our front yard and so far, no takers. Our front yard ...

Red backed shrikes migrate using a fixed schedule, flying in stages with little variation, showing that genetics guide bird ...