Report of Exploration of Seabird Colonies 237 



Gulls, 25 Royal Terns, 50 Forster's Terns, 75 Caspian Terns and 20 Brown 

 Pelicans. A stop was made here, June 13. 



5. Pass a UOutre Mud Lumps. — A rather large lump lies a little to the north 

 of a direct line out of this pass. Its bearing from the light is E. by N. JN. A 

 few Royal Terns, 25 Caspian Terns, 25 Laughing Gulls and about 125 

 Forster's Terns were nesting here. This lump was visited June 13. 



6. Northeast Pass Mud Lumps. — -About twelve islands, with a general bearing 

 of E. S. E. from Pass a L'Outre light, lie off Northeast Pass. The more northerly 

 of these lumps are in most cases the larger, and are occupied almost exclusively 

 by Brown Pelicans. Of young and adults there were about 600 birds. From 350 



LOUISIANA HERONS, EAST TIMBALIER 



to 400 Forster's Terns and about 500 Laughing Gulls were distributed among 

 the more southerly islands, and the majority of them were nesting. There were 

 also about 50 Cabot's Terns in this vicinity, but no certain proof of their nesting 

 was secured. These lumps were visited June 14. 



7. Southwest Pass Mud Lumps. — Just to the east of the new jetties and about 

 a mile from the lower end, I found about 200 Brown Pelicans nesting on three of 

 the four lumps in that locality. 



On the west of the jetties and near the upper end, two small lumps and two 

 large lumps were found occupied by about 7,500 Brown Pelicans in every stage 

 of nesting. 



The situation of these lumps, within easy reach of the Southwest Pass light- 

 house and the United States engineers' offices, renders them an ideal location 



