Aviation Quote by Leonardo da Vinci

A bird is an instrument working according to mathematical law, which instrument it is within the capacity of man to reproduce with all its…

— Leonardo da Vinci

Different people have different duties assigned them by Nature; Nature has given one the power or the desire to do this, the other that.…

— Henrik Ibsen

The bird has an honor that man does not have. Man lives in the traps of his abdicated laws and traditions; but the birds…

— Khalil Gibran

Feeding the birds is also a form of prayer.

— Pope Pius XII

Birds ... are sensitive indicators of the environment, a sort of "ecological litmus paper," ... The observation and recording of bird populations over time…

— Roger Tory Peterson

Birds are indicators of the environment. If they are in trouble, we know we'll soon be in trouble.

— Roger Tory Peterson

Birds are an ecological litmus paper.

— Roger Tory Peterson

Most birds are geniuses. We had one that became a pet; he learned to talk, use tools and solve problems.

— Jean Craighead George

A bird who can gobble is qualified to teach crowing.

— Edmond Rostand

“The birders I encountered in books and in the world shared little in common except this simple secret: if you listen to birds, every…

— Kyo Maclear

No man had ever heard a nightingale, When once a keen-eyed naturalist was stirred To study and define -- what is a bird.

— Emma Lazarus

The very idea of a bird is a symbol and a suggestion to the poet. A bird seems to be at the top of…

— John Burroughs