120 NORTH AMERICAN FAUNA. [No. 16. 
feeding and noisy when flying about the white-bark pines. When on 
the ground they are very deliberate, and their broad heads and general 
form suggest gulls, particularly when the birds are moving away from 
the observer. 
When searching for insects in the young hemlocks they sometimes 
began at the bottom and worked up, sometimes at the top and worked 
down. One day in early August a young-of-the-year, showing the true 
nutcracker spots on the breast, spent some time in camp, feeding in a 
small tree in our midst without showing the least annoyance at our 
presence. He began at the top and worked slowly downward, drop- 
ping from branch to branch and peering searchingly over the foliage 
and into the tutts of hemlock needles, often hanging almost bottom 
aia =a 
Vie, 39.—Clark Crow (Nueifraga columbiana). Drawn by L. A. Fuertes. 
side up to pick off the small green caterpillars which infested both the 
hemlocks and the Shasta firs. We could plainly see him grasp the lit- 
tle caterpillars crosswise and give a big gulp in swallowing them, as if 
bolting something several times as large. He went over a branch at a 
time, examining the whole of it carefully before moving to the one 
below, and sometimes went out so far toward the tip that the slender 
branch bent down with his weight. Another bird reversed this order 
of procedure, and after finally reaching the top of the tree gaye a 
jump, aided by a slight flap of the wings, and perched on the very top- 
most sprig, when, gaining his balance, he opened his bill and uttered 
a little cry of exultation. 
Clark crows were almost daily visitors to our camp among the alpine 
hemlocks on upper Squaw Creek until near the end of «August, when 
