Francisco Piedrahita:
Gaviota Tijereta, Swallow-tailed Gull (Creagrus furcatus)
Francisco Piedrahita:
Gaviota Tijereta, Swallow-tailed Gull (Creagrus furcatus)
Francisco Piedrahita:
Gaviota Tijereta, Swallow-tailed Gull (Creagrus furcatus)
Francisco Piedrahita:
Gaviota de Lava, Lava Gull (Larus fuliginosus)