Professional Field Guide (Bird Identifier) for 515 bird species inhabiting Europe - from the Atlantic Ocean to the Urals, and from the Arctic Ocean to the Mediterranean Sea. The list of bird species included in the app can be viewed at https://ecosystema.ru/eng/apps/21birds_eu.htm BIRDS IDENTIFIER The application has a built-in polytomic Bird Identifier (Identification Filter), which helps to determine the unknown bird by 24 different features. You can select the region of Europe, the size of t