Francisco Piedrahita:
Yellow-legged Gull (Larus michahellis)
Francisco Piedrahita:
Lesser Black-backed Gull (Larus fuscus)
Francisco Piedrahita:
European Herring Gull (Larus argentatus)
Francisco Piedrahita:
European Herring Gull (Larus argentatus)
Francisco Piedrahita:
European Herring Gull (Larus argentatus)
Francisco Piedrahita:
Glaucous Gull (Larus hyperboreus)
Francisco Piedrahita:
Glaucous Gull (Larus hyperboreus)
Francisco Piedrahita:
Glaucous Gull (Larus hyperboreus)
Francisco Piedrahita:
Great Black-backed Gull (Larus marinus)
Francisco Piedrahita:
Great Black-backed Gull (Larus marinus)
Francisco Piedrahita:
Great Black-backed Gull (Larus marinus)
Francisco Piedrahita:
Great Black-backed Gull (Larus marinus)
Francisco Piedrahita:
Lesser Black-backed Gull (Larus fuscus)
Francisco Piedrahita:
Lesser Black-backed Gull, Baltic Gull (Larus fuscus) (Larus fuscus fuscus)
Francisco Piedrahita:
Lesser Black-backed Gull, Baltic Gull (Larus fuscus) (Larus fuscus fuscus)
Francisco Piedrahita:
Slender-billed Gull (Larus genei) (Chroicocephalus genei)
Francisco Piedrahita:
Black-headed Gull (Larus ridibundus)
Francisco Piedrahita:
Black-headed Gull (Larus ridibundus)
Francisco Piedrahita:
Black-headed Gull (Larus ridibundus)
Francisco Piedrahita:
Black-headed Gull (Larus ridibundus)
Francisco Piedrahita:
Black-legged Kittiwake (Rissa tridactyla)
Francisco Piedrahita:
Black-legged Kittiwake (Rissa tridactyla)
Francisco Piedrahita:
Black-legged Kittiwake (Rissa tridactyla)
Francisco Piedrahita:
Black-legged Kittiwake (Rissa tridactyla)
Francisco Piedrahita:
Mew Gull, Common Gull (Larus canus)
Francisco Piedrahita:
Mew Gull, Common Gull (Larus canus)
Francisco Piedrahita:
Gaviotines Comunes (Sterna hirundo)
Francisco Piedrahita:
Arctic Tern (Sterna paradisaea)
Francisco Piedrahita:
Arctic Tern (Sterna paradisaea)
Francisco Piedrahita:
Arctic Tern (Sterna paradisaea)