153757 Jackdaw Corvus monedula in flight. L 31-34cm. Our most familiar small corvid. Has a swaggering walk and is aerobatic in flight. Forms large flocks outside breeding season. Sexes are similar. Adult has smoky-grey plumage, darkest on wings and crown, pale blue-grey eye and grey nape. Juvenile is similar but plumage is tinged brownish and eye is duller. Voice Utters a characteristic chack call. Status Widespread and common resident of farmland, sea cliffs, towns and villages.