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Skylark Alauda arvensis L 18cm. Has nondescript plumage and best known for incessant song, delivered in flight. Sexes are similar. Adult has streaked sandy-brown upperparts and paler underparts; breast is streaked and flushed buff. Short crest is sometimes raised. In flight, note whitish trailing edge to wings and white outer tail feathers. Juvenile is similar but with scaly-looking back. Voice Rapid song comprises trills, whistles and elements of mimicry. Call is a rolling chrrrp. Status Favours grassy habitats including meadows, heaths and arable farmland. Has declined alarmingly, due to changes in farming practises, but still common. Forms flocks outside breeding season; upland breeding birds move to lowlands in winter.