anes Uses ON Btls mel [Nn 13 
slight scratching inside, but nothing emerged. I climbed the tree and 
peered inside as best I could. A snapping told me that an owl was inside. 
The entrance hole was some four inches across, so I put on my glove and 
reached slowly and gently into the cavity, bringing out a screech owl 
clinging to my hand with its claws and biting at it with its beak. I released 
it and it flew silently off into the woods. The nest was along the edge of 
the woods near the hayfield east of the caretaker’s house. Another one 
was found in the open woods east of the elk pasture, one near the Bierman 
shelter, and a fourth one northeast of the open meadow near the shelter. 
One was found in mid-May with newly hatched young covered with white 
down in the nest; they were three in number. Two nests were found in 
early June with almost fully grown young, and both nests contained four 
young. 
In the swampy ground and low meadow south of Higgins Road and 
west of the Township Road nested some marsh species and others. Four 
pairs of marsh hawks were seen in the area almost continually and three 
. nests were found. One on May 18 contained three eggs in a nest made of 
CHICAGO ACADEMY OF SCIENCES PHOTO 
Marsh Hawk 
dry marsh grass, small sticks and twigs, on a grassy hummock about 20 
inches high, in very wet ground. Both birds circled and scolded as I 
examined the nest. Ten days later this nest contained five eggs. On 
May 28 another nest was found in the same area with three eggs in it. 
On June 2 a third nest with five eggs in it was found, and I judged incuba- 
tion was about a week advanced. The eggs in the first nest hatched on 
