Having worked with pigeons for 15 years, I can tell you that they truly mourn the loss of a mate.

"The town is et up with pigeons," he said.

In experiments with pigeons, Skinner showed that only one desirable result could lead to ritual behavior.

However, some cases are so severe that the fancier must avoid close contact with pigeons.

Birds were a big draw, with rare pigeons being particularly popular.

Another found a box filled with pigeons, which, when released, flew back to their absent-minded owner.

His bill had been unpaid for some time, but the immediate cause was associated with pigeons.

Now, in the past few days, the parents have been flying back and forth with rats and pigeons.

After years of neglect the structure was filled with roosting pigeons.

Indeed, people here live with chickens, ducks and pigeons in their homes.