cowbirds

In the Animal Kingdom, the Astonishing Power of the Number Instinct

Credit: dimitrisvetsikas1969/pixabay

The Flamingo’s One-Legged Act, Ants’ Princess Pheromones, Pampered Orangutans

An advanced tracking system revealed the secret habits of young cowbirds, like this one with a radio transmitter on its back. Credit: Mike Ward

How Do Chicks Raised By Parents of Another Species Know Who They are?