GENERAL >>>>> – medium-sized tern – considerably smaller and lighter weighted than Common Black-headed Gull – diurnal migrant, but probably nocturnal as well – migrates in small (sometimes large), loose flocks (in swift migration in dense flocks) or as family-party (summer) >> VISUAL ID >>>>> Common Tern Sterna h. hirundo, 1CY BIF2151, 05/07/20070, Spain, … Continue reading Common Tern
Sterna hirundo →