334 EXPLANATION OF PLATES. 



Plate 43. 



Upper: Flock of royal terns, Grand Cochere, Louisiana, June 19, 1910. 

 Lower: Eggs in above colony, referred to on page 213. 



Plate 44. 



Upper : Nesting colony of royal terns, Grand Cochere, Louisiana, June 19, 1910, 



referred to on page 214. 

 Lower: Pair of royal terns and young, Louisiana, a photograph presented by 



Mr. Alfred M. Bailey. 



Plate 45. 



Upper : Flock of young royal terns, Louisiana, July 5, 1918. 

 Lower: Young royal terns, Louisiana, June 15, 1918. Both photographs pre- 

 sented by Mr. Stanley C. Arthur. 



Plate 46. 



Upper: Nesting colony of Cabot's terns, Grand Cochere, Louisiana, June 19, 



1910, referred to on page 222. 

 Lower : Eggs of Cabot's tern in same locality. 



Plate 47. 



Nesting colony of Cabot's terns, with a few royal terns, Louisiana; a photo- 

 graph presented by Mr. Alfred M. Bailey. 



Plate 48. 



Upper: Nesting colony of Cabot's terns, with one royal tern, Southwest Key, 

 Louisiana, June, 1908 ; a photograph presented by Mr. Herbert K. Job. 



Lower: Young Cabot's tern, Louisiana, June 16, 1918, a photograph presented 

 by Mr. Stanley C. Arthur. 



Plate 49. 



Upper : Nests of Forster's terns, Wreck Island, Virginia, June 28, 1907, referred 



to on page 230. 

 Lower : One of above nests. 



Plate 50. 



Upper : Nests of Forster's terns, Barr Lake, Colorado, May 24, 1907. 

 Lower: Young Forster's terns in above colony. Both photographs presented 

 by Mr. Robert B. Rockwell. Referred to on page 231. 



Plate 51. 



Upper: Nest and eggs of Forster's tern, Barr Lake, Colorado, a photograph 

 presented by the Colorado Museum of Natural History. 



Lower : Forster's tern on its nest, Malheur Lake, Oregon, a photograph pre- 

 sented by Mr. W. L. Finley. 



Plate 52. 



Upper: Nest and eggs of common tern, Penobscot Bay, Maine, June 12, 1900, 



referred to on page 240. 

 Lower : Another nest of same, Muskeget Island, Massachusetts, June 22, 1902, 



referred to on page 239. 



