FaunaFocus

Monthly Archives: June 2020

Bald Eagle

Many bald eagle populations use geographic landmarks for navigation, making the Mississippi River a major migratory corridor.

Bald Eagle

Contrary to popular belief, bald eagles have relatively weak, high-pitched, thin vocalizations composted of chirps, whistles, and harsh chatters and produce 3 main types of calls.

Bald Eagle

Do you think you know the bald eagle? Test your knowledge of bald eagle FaunaFacts with this trivia quiz!

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Bald Eagle

As a top predator, bald eagles impact all members of their community and have been causing a population decline in common murres.

Bald Eagle

Immature bald eagles are often confused with golden eagles due to their dark coloration, but bald eagles have longer heads, shorter tails, and blotchy white coloration on their underwing coverts, axillaries, and tails.

Bald Eagle

Due to hunting, habitat destruction, and insecticides, bald eagles were once an endangered species, but thanks to The Bald Eagle Protection Act and other conservation efforts, they’re now considered “Least Concern” on the IUCN Red List.

Bald Eagle

This month, FaunaFocus is celebrating National American Eagle Day by collaborating with the American Eagle Foundation (AEF) and hosting another 24-hour charity host train in order to help conserve birds of prey around the world, including this month’s featured species, the bald eagle!

Bald Eagle

Bald eagle home range sizes may vary as populations in Oregon and Washington have larger ranges that those in Alaska, but they do not oscillate between breeding and non-breeding seasons.

Bald Eagle

Although both bald eagle parents care for the offspring, the female broods the eggs more frequently and is present 40% more than the male while the male provides most of the food during the first two weeks post-hatching.

Bald Eagle

While migrating, bald eagles generally soar and congregate in areas with food abundances, specifically in areas below the freeze line with open water for hunting.

Bald Eagle

This month, FaunaFocus is celebrating National American Eagle Day by collaborating with the American Eagle Foundation (AEF) and hosting another 24-hour charity host train in order to help conserve birds of prey around the world, including this month’s featured species, the bald eagle!

Bald Eagle

Bald eagle eggs are generally only exposed for less than a minute at a time when the parents change positions or turn the eggs.

Bald Eagle

Although bald eagles do not have an adept sense of smell, they do avoid food items that taste spoiled.

Bald Eagle

Bald eagles are the largest semi-altricial birds in Norther America, weighing 60 grams at hatching and gaining up to 180 grams per day.

Bald Eagle

Although bald eagles are often solitary, they pair bond during the nesting season and may congregate in areas with ample prey or roost communally in groups of up to 400 individuals.

Bald Eagle

Bald eagles have been the national symbol of the United States since 1782 and draw bird watchers and other nature enthusiasts with their charisma.

Bald Eagle

Because bald eagles reuse and build upon their nests each year, they become massive in size, weighing up to 2 tons.

Bald Eagle

Bald eagles forage, hunt, and pirate for their food, and the speed of a river’s flow can greatly impact and eagle’s hunting success.

Bald Eagle

Although fully grown bald eagles are not often subject to predation, their eggs and young can be preyed upon by magpies, gulls, ravens, crows, bears, raccoons, bobcats, wolverines, and arctic foxes.

Bald Eagle

About 1-3 months prior to egg-laying, male and female bald eagles will construct nests together, though the dates vary regionally, nesting earliest in the East and latest in the West.

Bald Eagle

Bald eagles perform flight displays with their mates, plummeting towards the ground with their feet clasped and letting go just before impact.

Bald Eagle

If lost, a bald eagle’s flight feathers may take 2-3 years to regrow.

Bald Eagle

Bald eagles are fully migratory and most populations of bald eagles, specifically those in northern regions, migrate to southern, milder climates annually.

Bald Eagle

Bald eagles have a low fecundity and typically produce one brood of 1-3 round, white eggs per season, but may have replacement clutches if needed.

Bald Eagle

Bald eagles are diurnal and are less active during the winter, when winds are especially high, or when there’s precipitation.

Bald Eagle

Bald eagles begin breeding when they are 5 years old and have a monogamous mating system, mating for life.

Bald Eagle

With large, forward facing eyes, bald eagles likely have very good binocular vision.

Bald Eagle

Bald eagle breeding varies geographically as populations located further north tend to have shorter breeding seasons and more synchronous nesting periods and produce larger eggs.

Bald Eagle

While bald eagles choose habitats with plenty of prey and tall trees, they will inhabit areas further from foraging grounds in order to avoid human interaction as human activity decreases their feeding by 35%.

Bald Eagle

Bald eagles are opportunistic foragers and have a wide, varied diet feeding on fish; adult water birds, their nestlings, and their eggs; carrion; small mammals; and even human refuse.

Bald Eagle

Bald eagles have sexually monomorphic plumage coloration, although females generally have a somewhat larger body size.

Bald Eagle

There are two recognized subspecies of bald eagle with the larger subspecies, H. l. alascanus, being larger than the southern, nominate subspecies, H. l. leucocephalus.