LIFE HISTORIES OF NORTH AMERICAN PETRELS AND PELICANS. 331 



Plate 17. 



Upper: Mr. Rollo H. Beck collecting a sooty shearwater and egg, on Wolhiston 

 Island, Chile, 15 miles north of Cape Horn. 



Lower : Sooty shearwater, its nest and its egg in above locality. Both photo- 

 graphs presented by the American IMuseum of Natural History. 



Plate 18. 



Nesting burrows of wedge-tailed shearwater, San Benedicto Island, Revilla- 

 gigedo Islands, IMexico, a photogi-aph presented by Mr. A. W. Anthony and 

 referred to on page 97. 



Plate 19. 



Upper : Pair of wedge-tailed shearwaters, Laysan Island, Pacific Ocean, a 

 ' photograph presented by Dr. Walter K. Fisher. 



Lower : Nesting colony of same in same locality, a photograph by Mr. C. T. 

 Albrecht, presented by the Biological Survey. 



Plate 20. 



Left : Young Peale petrel, a photograph of a mounted specimen loaned to the 

 author by the Park Museum, referred to on page 119. 



Right : Nesting site of Bulwer petrel, under huge boulders just above high- 

 water mark, Montana Clara, Canary Islands, a photograph presented by Mr. 

 David A. Bannerman. 



Plate 21. 



Upper : Nesting burrow of Leach petrel. Big Spoon Island, Jericho Bay, Maine, 



July 12, 1915. 

 Lower: Same burrow, opened to show bird, nest and egg. Both referred to on 



page 138. 



Plate 22. 



Upper : Burrows of Leach petrel, in the woods, Seal Island, Nova Scotia, 



July 4, 1904, referred to on page 139. 

 Lower: Downy young and egg of Leach petrel, Matinicus Rock, Maine, July, 



1906, a photograph presented by Mr. Herbert K. Job. 



Plate 23. 



Upper : Nest and eggs of Beal petrel. Three Arch Rocks, Oregon. 

 Lower : Beal petrel on its nest, same locality. Both photographs by Bohl- 

 man and Finley, presented by Mr. William L. Finley. 



Plate 24. 



Upper: Nesting site of yellow-billed tropic-bird, Morgan's Island, Bermuda 



Islands. 

 Lower: Yellow-billed tropic-bird on its nest, same locality. Both photographs 



presented by Dr. Alfred O. Gross and referred to on page 182. 



Plate 25. 



Upper: Young yellow-billed tropic-bird, four days old. 



Lower: Young of same, twenty days old. Both photographs presented by Dr. 

 Alfred O. Gross and referred to on page 184. 



