ACTION, ADULT, ADULTS, ALONE, AN, ANATIDAE, ANATINAE, ANIMAL, ANSERIFORMES, APRIL, ATMOSPHERE, AVES, AYTHYA, BIOSPHOTO, BIRD, CANVASBACK, COMMON, DEVELOPMENT, DIVING, DUCK, EARLY, ENDANGERED, ENUMERATION, EUROPE, EUROPEAN, FERINA, FULL, GLOBAL, IN, INDIVIDUAL, IUCN, IVAN, LENGTH, LIST, LOCOMOTION, LONE, LONELY, MALE, MATTER, MIGRATORY, MOTION, NOBODY, OF, ONE, ONLY, OVERVIEW, OVERVIEWS, PALMIPED, PARTICULARITY, POCHARD, POCHARDS, POSE, POSED, POSING, PROFILE, RED, SCANDINAVIA, SEASON, SEASONS, SETTLING, SETTLINGS, SHOT, SHOTS, SIDE, SIGHT, SIGHTS, SINGLE, SJOGREN, SOLO, SPECIES, SPRING, STAGE, SUBSTANCE, SURFACE, SURFACES, SWEDEN, SWIM, SWIMMING, TAKEN, TEMPERATE, THREATENED, UNION, VERTEBRATA, VIEW, VIEWS, VU, VULNERABLE, WATER, WATERSURFACE, WATERSURFACES, WILD, WITH,