The Cattle Egret is a small egret originally from Eurasia/Africa but now colonised worldwide. Although it nests near water, classed as a "wader" and will eat fish/crustaceans, it is more usually associated with cattle and other large livestock (hence its common English and scientific names) and eats insects disturbed by them or on them such as ticks.
The Cattle Egret's non-breeding plumage is white, its bill yellow and legs grey/yellow; breeding plumage has a red pink blush on head, face and throat, with red beak, legs and, sometimes, irises.
A food morsel
A gregarious bird which roosts in colonies in trees
Nesting (and the crest and red bill)
Pink breeding plumage
Non-breeding all white plumage
with black legs