Wood stork

The “giant of the swamp”

U.S. Fish and Wildlife Service Southeast Region


Wood stork

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The “giant of the swamp”

Population

A fascinating and unusual-looking bird that stands out among wetland wildlife with its tall stature, bald wrinkled head, and impressive wingspan. Despite its somewhat prehistoric, vulture-like appearance, the wood stork is a graceful flyer and a skilled hunter—especially when it comes to catching fish in murky waters.

One of the most unique things about the Wood Stork is how it feeds. Unlike many birds that rely on sight to catch prey, the wood stork uses a technique called “tactile feeding.” It walks slowly through shallow water with its long beak wide open and partially submerged. As soon as a fish, frog, or small crustacean brushes against it, the stork’s beak snaps shut in as little as 25 milliseconds—faster than the blink of an eye! This “snap reflex” is one of the quickest reflexes in the animal kingdom, making the stork a remarkably efficient predator.

Although they may look a bit odd, Wood Storks are amazing fliers. Once airborne, they become unexpectedly elegant, soaring high on thermal currents with their necks stretched out and legs trailing behind. They barely flap their wings when gliding and can cover great distances without tiring. In fact, wood storks are so good at riding air currents that they can sometimes be seen soaring with vultures and hawks.

Wood Storks are incredibly picky nesters. They only breed when water levels are just right—not too high, not too low—because they rely on drying pools to concentrate fish for feeding their chicks. If the water isn’t perfect, they won’t nest at all. When conditions are ideal, however, they gather in huge colonies and build massive stick nests in trees above the water, usually alongside other wading birds like herons and egrets.

Distribution

Country
Population est.
Status
Year
Comments
Argentina
2016
Aruba
2016
Bahamas
2016
Belize
2016
Bolivia
2016
Brazil
2016
Canada
2016
Cayman Islands
2016
Chile
2016
Colombia
2016
Costa Rica
2016
Cuba
2016
Dominica
2016
Vagrant
Dominican Republic
2016
Ecuador
2016
El Salvador
2016
French Guiana
2016
Guatemala
2016
Guyana
2016
Haiti
2016
Honduras
2016
Jamaica
2016
Seasonality Uncertain
Mexico
2016
Nicaragua
2016
Panama
2016
Paraguay
2016
Peru
2016
Suriname
2016
Trinidad & Tobago
2016
Turks & Caicos
2016
United States
2016
Breeding
Uruguay
2016
Non-Breeding
Venezuela
2016

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Terrestrial / Aquatic

Altricial / Precocial

Polygamous / Monogamous

Dimorphic (size) / Monomorphic

Active: Diurnal / Nocturnal

Social behavior: Solitary / Pack / Flock

Diet: Carnivore / Herbivore / Omnivore / Piscivorous / Insectivore

Migratory: Yes / No

Domesticated: Yes / No

Dangerous: Yes / No