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All birds are incipient or would-be songsters in the spring. I find corroborative evidence of this even in the crowing of the cock.

Birds have wings; they're free; they can fly where they want when they want. They have the kind of mobility many people envy.

Birds are the most popular group in the animal kingdom. We feed them and tame them and think we know them. And yet they inhabit a world which is really rather mysterious.

Thus the genetic basis to the origin of bird species is to be sought in the inheritance of adult traits that are subject to natural and sexual selection.

There is nothing in which the birds differ more from man than the way in which they can build and yet leave a landscape as it was before.

I would love to be more specific, but really, any type of bird is the funniest animal. They have to move awkwardly when walking. They have beady eyes; they are very suspicious. They can't do anything right. They have no hands, which is inherently funny.

The evidence is overwhelming that birds are dinosaurs.

Big Bird is based on what I learned as a child.

Eagles are seagulls with a good hairdo.

Most birds are very stiff-necked, like the robin, and as they run or hop upon the ground, carry the head as if it were riveted to the body. Not so the oven-bird, or the other birds that walk, as the cow-bunting, or the quail, or the crow. They move the head forward with the movement of the feet.