When it comes to affairs of the heart, there are a variety of factors at play: mutual attraction, shared interests, an intangible spark that eventually leads to love. But in Darwinian terms, the ...

Male budgie birds who show smarts become more attractive in the eyes of female counterparts, a new study suggests. According to the results, direct observation of "clever behavior," such as the ...

Strolling through St. Paul’s Phalen Park last fall with some birdwatching friends, I heard an unusual bird call, repeated several times. Following the sounds to an oak tree, we were startled to see ...