A bird’s beak colour can change due to various factors like age, diet, hormones, or seasonal changes. For example, some birds develop brighter beaks during mating season to attract partners.

A pair of northern gannets greet each other by touching beaks on Bonaventure Island in the Gulf of St. Lawrence off the coast of Quebec, Canada’s Gaspe Peninsula, on Sept. 13, 2022. Carolyn ...

Close up of a male Northern cardinal, known for its vivid red plumage and distinctive features that include a red beak and a black mask around the eyes. All living organisms host microbiomes ...