Mav. 1903 I THE CONDOR 67 
flounce around him distractedly, or lighting close beside his ear or under his bill 
look up at him and scream in his face; but through it all the dignified bird of prey 
would plume his feathers as unconcernedly as if his assailant had been a buzzing 
gnat. Sometimes, it is true, the mocker would fly at him and hit him on the back 
so hard that his tail would fly up involuntarily, and once, having silently received 
seven blows in quick succession, Harrisi deliberating a moment, turned his stately 
head and gave a reproachful scream in a hoarse warning tone. The mocker was 
so startled by this unexpected rebuke that he fairly sat back on his perch. Then 
as if that were all there was to say on the subject, the big bird with a heavy jump 
faced around on another branch, to spy out the land in another direction. 'I'hough 
the mocker promptly returned to the charge, Harrisi sat calmly on one toot in 
FROM THE BIOLOGICAL SURVEY. 
NESTING GROUND OF HARRIS HAWK. 
philosophic oblivion of all but his own thoughts. The play lasted for the hour 
that we were in the neighborhood, with unabated vigor on the part of the mocker 
and unfailing superiority on that of the hawk. 
The reason for Harrisi’s attachment to the neighborhook became apparent 
later when we discovered his nest in a moss hung hackberry on the bank of the 
creek. Two big heads showed above the mass of sticks and Mr. Bailey climbed 
the tree to get a photograph of the young. As he got to the nest they burst from 
it, sprawling out over the branches, and one of them fell prone to the ground. He 
tried to amble off when approached but was easily caught and quieted. While I 
was examining his plumage, Mr. Bailey called down in astonishment over the 
wood rat golgotha he had found in the moss-lined nest — skeletons enough to more 
