Their population in the U.S. in the 1700s was about 300,000 - 500,000. Their numbers were once as low as 500 nesting pairs. There population today is about 70,000 in the whole North America
(including Alaska and Canada.) It has decreased more than half of its population.
Eagles have a high-pitched squeak to warn others of predators. Other interesting behaviors including “talon clasping” or “cartwheel display”, where two eagles clasp each other’s talons in midair and spin down, letting go only when they’ve almost reached the ground this may to be territorial battle. Territorial battles happen normally because of food.
Mating season is anywhere from late September to early April, depending on the region. During mating season, the male and female work together to build a nest of sticks, that is usually locater at the top of a tree. The nests can weigh up to a ton and measures up to 8 feet across. The female lays her first egg 5 to 10 days after mating. The eggs are incubated for about 35 days there are about 1 to 3 eggs each season for each bird.