Barnacle goose close-up in a field of short grass at the Caerlaverock Wetland Centre, South West Scotland

scotland caerlaverock wetland centre bird nature barnacle animal wildlife geese environment wild goose outdoor branta leucopsis waterfowl natural barnacle goose ornithology white black branta leucopsis gray beautiful feather outside outdoors fauna color avian fowl birding climate migration birds wild nature winter barnacle geese wilderness waterbird migratory geese fly south plumage background colorful beak bird watching ecology protecting wwt feeding