File:What appears to be a swallow-tailed gull - Creagrus furcatus - is framed in a lava arch along a Galapagos shoreline 0671.jpg

What appears to be a swallow-tailed gull - Creagrus furcatus - is framed in a lava arch along a Galapagos shoreline.

Image ID: mvey0671, NOAA's Ark - Animals Collection Location: Tower Island, Galapagos Islands, Ecuador Photographer: Rosalind Cohen, NODC, NOAA