Mourning Dove
Zenaida macroura
Named for its sad, grieving coo — though the whistling you hear at takeoff isn't its voice at all, it's the wings. Its scientific name macroura even means 'long-tailed,' the other thing you'll notice.
Zenaida honors Zénaïde Bonaparte, Napoleon's niece and the wife of the naturalist who named the bird; macroura = Greek makros 'long' + oura 'tail.'