146 
THE CONDOR 
Voe. XI 
cactus, and a careful scrutiny reveals an Owl's head projecting above the rim of the 
nest. 
February 28, I found two eggs in an old Redtail’s nest, 60 feet up in a cotton- 
wood tree. Both old birds were at home but made no demonstration when I 
climbed to the home. A Redtail that perclit in the top of a neighboring tree did not 
escape so easily tho, as the male owl savagely attackt him, and drove him off. 
March 14 another nest was found containing two eggs. This nest was merely a 
decayed hollow in the forks of a big cottonwood tree, 15 feet from the ground. 
The nest was discovered by throwing a club into the tree, when the bird flew out. 
GIANT CACTUS (CEREUS GIGANTEUS) ; A WESTERN HORNED OWE 
IS TO BE SEEN ABOVE THE EDGE OF THE NEST IN THE FORKS 
Nothing had been visible, but the tree lookt owlish, and a bombardment brought 
results. 
For at least four years a pair of these owls have nested in the pre-historic Casa 
Grande ruins; see photo by Frank Pinkley, the custodian. Mr. Pinkley told me 
the birds raised a brood each year in the old building, and had never been molested 
except once, when one of them developt a decided taste for prize Wyandot 
chickens. This was his undoing, but his widow secured another mate very soon 
and went on keeping house as tho nothing had happened. 
