160 Bulletin Wisconsin Natural History Society [Vol. 13, No. 3 
Archibuteo lagopus sancti-johannis (Gmelin). Rough-legged 
Hawk. 
Two individuals only were seen, both flying low over the 
swamp, apparently searching for food. 
Falco sparverius sparverius Linnaeus. Sparrow Hawk. 
Several pair of these little hawks were seen from early May 
till the middle of September in zone eight, where they probably 
Fig. 10. Nest and Eggs of the Short Eared Owl. 
nested. Occasionally found in the swamp, where they went 
for food. 
Asio wilsonianus (Lesson). Long-eared Owl. 
Not uncommon in the border area of zone seven. The stom- 
ach of one individual contained five Peromyscus leucopus. 
Asio flammeus (Pontoppidan). Short-eared Owl. 
Common in zone five, where the species breeds. Of four 
stomachs examined, one had eaten five Microtus pennsylvanicus 
another three of the same, and one Blarina breviccauda; the 
