background or texture of green grass grey-headed wagtail (motacilla flava thunbergi)

asia avian biodiversity bird birding birdwatching branch breeding cactus coastal conservation ecosystem environment europe fauna feathers fir flava flower flying foraging frost grass grassland grey grey-headed habitat head insect-eating leaf lover meadow migration motacilla natural nature nesting ornithology outdoor passerine patterns photography plant plumage produce regions riverside season shallow shrub singing species spring spruce summer tail thorns thunbergi tree twig wagging wagtail waters wetland wildlife wings winter yellow