Why Sick Crows Need Ants
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Why Sick Crows Need Ants

Published 2 min read
KevinDTiptonPhotography/Shutterstock.com

If you were feeling a bit under the weather, perhaps the last thing you would do is lay on an ant’s nest. But this odd behavior is a crow’s go-to remedy for sickness! Crows have found a way of ridding themselves of pesky pathogens and parasites, with a little help from their creepy crawly friends. Take a look at the crow literally covered from head to toe in ants in this crazy Instagram post. Then read on as we introduce you to the ancient art of anting!

What Is Anting?

Ants close-up. Ants family. Little black ants are at work. Ants with prey at the entrance to the termite mound. Clay and small stones texture. Mink in the ground. Green grass near termite mound

Some ants produce formic acid.

The crow in this clip is engaging in a behavior called anting, in which birds apply ants to their plumage. More than 200 different species of birds have been seen doing it, and many of them are songbirds, crows, and ravens.

During active anting, the bird grasps the ants and rubs them on their feathers. This is typically done with one ant at a time, whether the insect is alive or dead! Passive anting is pictured in this Instagram post. During this version, the bird walks or hovers over an ant’s nest, provoking the ants into swarming the bird. Birds mainly target ants from the subfamily Formicinae for this purpose. They produce formic acid, which seems to be a healing substance for the birds.

What Is Wrong with the Crow?

Scientists are not entirely sure why crows indulge in anting behavior, but there are several plausible theories. The most likely explanation is pest control, as ants remove ectoparasites such as arthropods. But they also remove fungi and bacteria that could cause skin infection and irritation. Some earlier theories suggested that anting might stimulate oil production in birds, but there is little evidence that this provides a significant vitamin D benefit for them. Eating the ants is another benefit for some birds. Others may simply do it because they like the way it feels. Though it’s certainly not our idea of a good time, each species behaves according to its own unique instincts and needs.

Sharon Parry

About the Author

Sharon Parry

Dr Sharon Parry is a writer at A-Z animals where her primary focus is on dogs, animal behavior, and research. Sharon holds a PhD from Leeds University, UK which she earned in 1998 and has been working as a science writer for the last 15 years. A resident of Wales, UK, Sharon loves taking care of her spaniel named Dexter and hiking around coastlines and mountains.
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