This is bird note.

Nesting bald eagles like their privacy, but how much space between one massive nest and the next can vary a lot

and it often depends on the food supply.

Bald eagles nest near water to hunt fish and water birds and their nesting

territories range from two and a half square miles to as large as 15

square miles depending on how much food there is.

Red-tailed hawks nest in diverse habitats,

from forest edges to canyon cliffs.

A pair will typically have a nesting territory of about a half mile to a full square mile. Gere Falcons in Finland and Scandinavia really need their space.

and once again prey plays a crucial role. They feed on pheasant-like birds called

Tarmigan and Tarmigan numbers fluctuate so wildly from year to year that raising young

jeer falcons is a real challenge. The last thing these birds need is

competition from their neighbors. In one research area their enormous nests

were found on average just once every 175 square miles. That's like one nesting pair in the whole city limits of Chicago.

For Birdna, I'm Michael Stein.