157973 Jay Garrulus glandarius L 33-35cm. Colourful, wary bird identified in flight by white rump. Buries thousands of acorns each autumn. Sexes are similar. Adult and juvenile are mainly pinkish buff body except for white rump, undertail and lower belly. Wings are black and white with chequerboard patch of blue, black and white. Note black â€˜moustacheâ€™, streaked pale forecrown, and pale eye. Voice Utters a loud and harsh scream. Status Fairly common woodland resident, commonest where oaks (and hence acorns) are plentiful.