Birds are the biggest group of land vertebrates characterised by warm blood, feathers, wings, breathing through lungs and egg laying.
Birds are bipedal - feet are usually adapted for perching and never have more than four toes. Hearing and eyesight are well developed but the sense of smell is usually poor.
No existing species of bird possesses teeth. Most birds fly but some groups such as ostriches are flightless and others include flightless members.
Many communicate by sounds nearly half of all known species are songbirds or by visual displays.
At Chester Zoo we hold a large bird collection with approximately 1000 birds of nearly 200 different species.
Our bird collection is very diverse with birds from 18 different orders being kept at the zoo. Around 45% of the birds at Chester Zoo are threatened or near threatened in the wild.