62 
THE BIRDS OF WISCONSIN. 
At t i niter cooperii (Bonap.J. COOPER'S HAWK. 
Common summer resident, even in thickly settled parts of 
the state. Arrives in southern Wisconsin about the middle 
of April, and remains until the middle of October. Nests 
commonly in the black oak groves of "second growth" timber, 
but is in no wise restricted as to kind of tree. We have taken 
a set in a tamarack in a heavy swamp, and even in poplars. 
By far the most destructive hawk to poultry during the 
summer season. For daring, boldness and destructiveness it 
is only equalled by the goshawk in winter. Nests early in 
May, and frequently a second brood is reared. This hawk 
will at times nest in close proximity to a farm house, but with 
a great display of cunning will draw on some distant poultry 
yard for supplies until the young are ready to leave the nesr. 
This hawk is much more common than thirty years ago, at 
any rate locally. In rare instances noted during mild winters 
in southern Wisconsin. 
Accipiter atricapillus (Wils.). AMERIC AN GOSHAWK. 
A regular winter resident, formerly even well into Illinois. 
At the present time the goshawk is becoming rarer, even in the 
central and northern parts of the state. Dr. Hoy, in 1852, 
speaks of it as occurring at all seasons, the adults only in 
winter. Our personal recollection is that it was the young 
birds which were so destructive to poultry thirty years ago, in 
winter. Barry writes of its abundance in the early fifties, men- 
tioning that a friend shot twenty in one season. Thure 
Kumlien considered it a rare summer resident at an early day, 
but personally or from other observers we have no positive 
nesting records, although the species perhaps bred in the 
northern portions of the state. Mr. J. N. Clark finds it a 
regular winter visitant in Dunn County, some winters 
abundant, but growing less common. We have taken three 
adults at Milton during the past ten years. Lives almost 
exclusively on grouse, poultry, rabbits, etc., and is very 
destructive. 
Buteo borealis (Omch). RED-TAILED HAWK. 
A common species, resident in southern Wisconsin, though 
much more numerous during spring and fall migrations. Nests 
in all sections of the state, even in quite thickly settled 
localities. Commonly called "chicken hawk" or "hen hawk," 
but in no wise as destructive a bird as is generally supposed. 
