113 



THE NATIONAL GEOGRAPHIC MAGAZINE 



Photograpli from U. S. Biological Survey 



A BIOLOGICAI, SURVEY SHELTER FOR BANDING YOUNG HERRING GULLS 



As a result of the bands placed on Gulls in northern Lake Michigan, their wanderings liave 

 been traced to the mouth of the St. Lawrence River, down the Atlantic coast, the Mississippi 

 Valley, and into central Mexico. 



"a bird in the hand" 



Photograph from S. Prentiss Baldwin 



Experience in bird banding has developed a technique of handling that is easy for the bird. 

 The method shown here was developed by an operator who has handled birds more than 40,000 

 times. The bird is a Towhee. 



