50 Bulletin No. 27. 



THE JULESBURG HORIZON. 



American Bittern. Western Meadowlark. 



Western Sandpiper. Western Vesper Sparrow. 



Solitary Sandpiper. Western Grasshopper Sparrow. 



Bartramian Sandpiper. Western Lark Sparrow. 



Spotted Sandpiper. Clay-colored Sparrow. 



Killdeer. Lark Bunting. 



Belted Piping Plover. Purple Martin. 



Mourning Dove. Barn Swallow. 



Marsh Hawk. Tree Swallow. 



Swainson's Hawk. Yellow Warbler. 



Burrowing Owl. Western Yellow-throat. 



Kingbird. Yellow-breasted Chat. 



Desert Horned Lark. Brown Thrasher. 



Cowbird. Short-billed Marsh Wren. 

 Red-winged Blackbird. 



W. L. Dawson, Ahtanum, Wash. 



NOTES ON THE COMMON TERN. 

 STERNA HI R UNDO. 



It has been my privilege to spend six weeks in the laboratories of the 

 U. S. Fish Commission at Wood's Hole, Mass., this summer. A pressure 

 of work on invertebrates has not given much time for birds, but some 

 opportunities did come to study the terns. 



The Common Tern is abundant at Wood's Hole and it would hardly 

 be possible to look out over the water in any direction on a summer day 

 without seeing at least one and more likely a half dozen or more of these 

 beautiful birds wheeling and circling here and there, every few minutes 

 dropping like lead head first into the water in a seemingly tireless search 

 for something edible. They are a never failing source of delight to a 

 bird lover. 



Among the few colonies of terns on the Atlantic coast that still survive 

 the ravages of the millinery trade are two near Wood's Hole. A large 

 one is at Perkin's Island and a smaller one at Wocpecket Islands. 



It was my good fortune on July 20th to accompany Mr. Frank M. 

 Chapman on a trip to Penikese Island, not with guns and egg cases but 

 carrying cameras, tripods and plate holders. A two hour ride on the 



