Have you tried the mobile app LifeTerns?
17-11-2021
A tern or a gull? Most people do not recognise these birds as they look for them similar. A simple App will help you to identify terns’ species found in Lithuania.
You can download a free App from the Google Play or Apple Store:
Android -> https://play.google.com/store/apps/details?id=mobappkurimas.lifetrens&hl=lt
IOS -> https://apps.apple.com/us/app/ id1502102720
