National Geographic : 1938 Aug
© Ronald M. Lockley THE BLOODTHIRSTY BLACK-BACKED GULL IS A TENDER MOTHER Greatest gull of all is this fierce robber, which at every opportunity kills the lesser sea birds, such as the puffins and shearwaters. Yet it is patient at its own nest. Here the bird is looking up at the photographer's tent on Skokholm after delicately assisting one of its chicks out of the shell. ©Capt. H.Morrey Salmon WHEN THE WIND BLOWS FRESH, PUFFIN GLIDES AND PLANES If the breeze is gentle, thesea parrot works hiswings rapidly toflyabove the grassy slopes. In that curious billthepuffin can carry two orthree fish crosswise to feed its solitary youngster back home inarabbit burrow (p.259). The heavy beak molts in autumn and isnot regrown until next spring (p.274).