Cattle egrets. Les garde-boeufs.Sri Lanka.

These egrets have a symbiotic relationship with cows. They stay with a cow all day. As the cow grazes, the egrets eat the insects which are disturbed. They also eat ticks which attach to the cow itself.
Ces aigrettes mangent et les tiques de la vache, et les insectes qui sont derangees lorsque la vache paisse. Elles accompagnent les vaches le long du jour au champs.