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Bald Eagle
Immature birds have mostly dark plumage, with mottled white patches, especially on wings and tail. They take about 4–5 years to acquire full adult plumage.
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Ethan Jackson
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Identification & Appearance
Size: 30–31 inches in body length (about 76–79 cm). Wingspan: roughly 6 to 7½ feet (~1.8 to 2.3 m).
Adults are unmistakable: white head and tail, dark brown body and wings; yellow bill and eyes.
Immature birds have mostly dark plumage, with mottled white patches, especially on wings and tail. They take about 4–5 years to acquire full adult plumage.
Habitat & Range
Found throughout much of North America. Some populations are year-round residents (especially in southern or coastal regions), others migrate from northern inland areas in winter.
Preferred habitats include lakes, rivers, large reservoirs, coasts, estuaries — basically places with abundant fish and tall perch or nesting trees.
Behavior & Diet
Opportunistic feeders: primarily fish, but also eat birds, mammals, and carrion. When fish are abundant, fish dominate their diet; when not, they’ll switch to other prey or scavenging.
Hunting methods include: watching from a high perch and swooping, flying low over water, even wading in shallow water. Also known to steal food from other birds like Ospreys.
Reproduction & Lifespan
First breeding usually at age 4-5 years. Bald Eagles are believed to mate for life.
Nest: built in tall trees or on cliffs, sometimes reused year after year. Both adults help build/maintain nest and care for young.
Eggs: typically 2 per clutch (sometimes 1-3). Incubation ~34-36 days by both parents.
Young eagle behavior: Parents feed young by tearing prey into smaller pieces at first; fledging occurs around 10-12 weeks. Juveniles are entirely dependent early on, with both parents caring.
Conservation & Trends
Status: Least Concern per IUCN. Bald Eagles experienced severe declines in the mid-20th century (largely due to DDT, habitat loss, hunting) but have made a strong recovery since protections were enacted.
Population: now widespread again; many states/counties in the U.S. see healthy breeding populations.
Threats: things like habitat disruption, environmental pollution, lead poisoning, human disturbance, but conservation measures (legal protection, habitat protection, removal of harmful pesticides) have helped.
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