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Bald Eagle

Photo by Ray Hennessy on Unsplash

Bald Eagle

America's national bird and a fearsome aerial hunter/Small Animals

The bald eagle is not actually bald; the name comes from the Old English "balde," meaning white. With a 2-meter wingspan, talons that grip with over 400 newtons of force, and eyesight roughly 4 to 8 times sharper than a human's, this raptor is built to snatch fish from the water at highway speeds. Their nests can weigh over a metric ton.

Measurements

Wingspan2.1 m
6 billionUranium atoms
18.4Popsicle lengths
280 millionCell membranes

Average adult female

Body mass5 kg
5,000Paperclip weights
2,000US pennies
27.5Apples

Females 4.3-6.3 kg, males smaller

Diving speed44 m/s
11Running chickens
1.41Cheetahs
14,667Hawaiian lava flows

About 160 km/h in a dive

Talon grip force440 N
44Zipper pulls
8.8 tenthsHigh-fives
88Rubber band snaps

About 10 times human grip strength

Cruising flight speed18 m/s
12.9Swimming humans
2 hundredthsRifle bullet speeds
56.3 millionGlacial retreat

About 65 km/h

Nest diameter2.5 m
1.04Golf cart lengths
1.67Blue whale hearts
5.1 tenthsMail truck lengths

Largest recorded was 2.9 m across

Nest mass907 kg
90.7 septillionInsulin molecules
33.6 quadrillionRed blood cell weights
4.54Motorcycles

Some nests exceed 1,000 kg over years

Talon length5 hundredths m
1.14Wine cork lengths
3.8 hundredthsFiling cabinet heights

Rear hallux talon

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