Birds
American Coot
Fulica americana · also called american coots
Paddling across a marsh pond on lobed rather than webbed toes, an American coot keeps a close eye on a brood of chicks flashing shocks of orange fuzz, a colourful display that research suggests may actually influence which chicks get fed first.
Overview
The American coot, Fulica americana, is a widespread waterbird native to wetland habitat across most of North America. Its unusual lobed-toe swimming adaptation, strikingly colourful chicks that may receive preferential parental feeding, and notably aggressive territorial temperament make it one of the most behaviourally distinctive and thoroughly studied waterbirds found anywhere on the continent.
A plain adult, a flashy chick
The transformation from a brightly coloured, fuzzy-headed chick into a uniformly dark adult is one of the more visually dramatic developmental changes among North American waterbirds, and it may carry real consequences for how much attention a chick receives from its parents along the way.
Status
Least Concern, remaining widespread and abundant across suitable wetland habitat throughout North America.
American Coot: common questions
Why does the American coot have lobed toes instead of webbed feet?
This species has distinctive lobed toes rather than the fully webbed feet found on ducks, an adaptation that still provides effective propulsion for swimming and diving while also functioning well for walking across muddy shorelines and floating vegetation.
Why do American coot chicks look so different from adults?
Newly hatched chicks of this species have a shock of orange-red fuzzy down and a bald, brightly coloured head, a striking appearance that fades as the chick matures into the plain grey-black plumage typical of adults.
Do parent coots treat all their chicks equally?
Not necessarily, since research has suggested that parent coots may preferentially feed the most brightly coloured chicks within a brood, a pattern that may help parents allocate limited food resources when competition among chicks for attention is high.
Is the American coot an aggressive bird?
Yes, this species is known for a notably aggressive and territorial temperament, frequently engaging in physical disputes with rivals, including chasing, splashing, and direct physical confrontation over space and resources.