155981 Red-necked Grebe - Podiceps grisegena - Summer adult. L 40-45cm. Smaller and more stocky than Great Crested, with striking summer plumage. Note diagnostic yellow-based bill. White wing panels seen in flight. Sexes are similar. Adult in summer has red neck and upper breast; head has white-bordered pale grey cheeks and black cap. Upperparts otherwise grey-brown and underparts whitish with grey streaks on flanks. In winter, loses neck colours but often retains hint of reddish collar. Cheek pattern is less well defined and ear coverts are grubby. Juvenile is similar to winter adult with more extensive red on neck. Voice Mostly silent. Status Scarce winter visitor to sheltered inshore seas and estuaries; occasional on inland lakes and reservoirs.