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Bulletin of the Museum of Comparative Zoology 

 AT HARVARD COLLEGE. 



Vol. LXIII. No. 4. 



REPORTS ON THE SCIENTIFIC RESULTS OF THE EXPEDITION TO THE 

 TROPICAL PACIFIC IN CHARGE OF ALEXANDER AGASSIZ, ON THE U. S. 

 FISH COMMISSION STEAMER "ALBATROSS," FROM AUGUST, 1899, TO 

 MARCH, 1900, COMMANDER JEFFERSON F. MOSER, U. S. N., COMMANDING- 



XXI. 



; 



THE BIRDS. 



By Charles Haskins Townsend and Alexander Wetmore. 



Published by Permission of H. M. Smith, U. S. Fish Commissioner]. 



CAMBRIDGE, MASS., U. S. A.: 



PRINTED FOR THE MUSEUM. 



August, 1919. 



