https://operationmigration.org/whooping-crane-the-ultimate-guide/Whooping Crane: The Ultimate Guide
/ Cranes / By Operation Migration Team
The whooping crane is known to be the tallest North American bird. These tall birds have long legs and long necks, and get their name from the iconic whooping sound that they produce.
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Interestingly, they are one of only two crane species which are native to North America.
However, they are under threat of extinction because of a loss of habitat, as well as down to unregulated hunting. After some effort by conservationists, the whooping crane population has increased to more than 800 birds.
Appearance
An adult whooping crane can be recognized by its white plumage, red crown, and a dark, long, pointed bill. The whooping crane’s bill is stout and straight.
When the cranes are in a standing position, they can be recognized from their slender body which then widens into a plump collection of feathers at the tail.
Their necks are long and elegant, and during flight, these are kept straight, with their equally long legs trailing behind them. The whooping crane’s wings are broad during flight.
Immature whooping cranes have a mottled brown upper plumage, with a whitish belly.
These are elegant birds which are very agile, lightweight fliers, despite their impressive height. They are actually the tallest North American bird that is capable of flight.
There isn’t all that much difference in height between the male and the female, and they both have the same plumage. This is in contrast to many birds where the males and females have different markings.
Size Measurements
Wingspan: 7.5ft, 90 inches, 229cm
Weight: 13.3lbs to 17.2lbs, 6kg to 7.8kg
Body length: 4.9ft, 59 inches, 150cm
Male Vs Female
Interestingly, there isn’t much difference between the male and female birds. The male whooping crane can be slightly larger than the females, but this is mostly where the difference ends.
Both males and females have the same plumage.
Are They Aggressive?
Whooping cranes will only tend to be aggressive when it comes to defending their nest and their young. Both parents will defend their offspring and their nest, however, the males are usually more aggressive than the females.
Whooping cranes are naturally very wary of humans, and will likely defend themselves if you were to get too close to their nest.
Impressively, the whooping crane will use their aggressive behavior as a defense to get predators away from their nest. Juveniles are more likely to fall prey to a predator as they aren’t as experienced at fighting them off.
What Adaptations Do They Have?
The whooping crane has been adapted for flying. They have a lightweight frame of around 15lbs (6.8kg), even despite their impressive height.
Unlike humans, the whooping crane has hollow bones to help make them even lighter when in flight. They also have special flight feathers to help aid them when in the air.
Because they are only active in the daylight, they have piercing yellow eyes to help them move around their surroundings. Their beaks are long and slender to help them forage for food in weeds and grass.
Their long necks also allow them to forage for food from the bottom of streams and lakes without getting the rest of their body feathers wet.
Whooping cranes also have fantastic hearing, which is covered by their feathers.
Breeding/Reproduction Behaviour
This is a bird that will tend to form a pair bond for life. The adult whooping cranes will form into pairs around 2 or 3 years of age.
They will find their mates by performing elaborate displays which often include leaping, flapping their wings, flinging grass and features, and tossing their heads.
Once a pair has bonded, they will then lay between one to three eggs, most likely two.
However, only one baby crane will typically survive to adulthood. This juvenile bird will become independent early on, but will stay with its parents during its first year.
Their Calls/Sounds
This bird is known for its whooping call. That’s where it gets its name from, after all! The whooping crane will give a single note, very loud bugle when it’s disturbed.
It will typically only last for a second or two. Whooping cranes will call in unison to one another when courting. Their loud call can be heard from as far as 5 miles away.
When the birds are feeding, they will often give off a low purr to help them stay in contact with one another.
What Do They Eat? (Diet)
Whooping cranes typically eat a diet of aquatic invertebrates such as crustaceans, insects, and invertebrates. They also eat small vertebrates such as amphibians, birds, fish, reptiles, and mammals.
They are also known for eating berries, acorns, grains, marsh plants, and roots.
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Topic: Whooping Cranes, Operation Migration (Read 113169 times)