66 
THE BIRDS OF WISCONSIN. 
Haliseetus leacoceplialns (Linn.). BALD EAGLE. 
The summer resorts about our lakes have gradually driven 
this species from its former nesting haunts. Bred about Lake 
Koshkonong twenty-five years ago; one nest at least, or the 
same tree, had then been occupied by the birds for over twenty 
years. In southern Wisconsin at the present day the eagle is 
mainly a spring and fall migrant about the inland lakes, but 
specimens are occasionally seen in mid-summer. Still nests, 
not rarely, in Vilas County and in many of the sparingly settled 
portions of the northern part of the state. The young birds 
move southward some time in advance of the adults. Not at 
all rare along the Mississippi, but seems to prefer to nest in the 
vicinity of inland lakes. 
Falco peregrinus anatnm (Bonap.). DUCK HAWK. 
Of regular occurrence during the migrations, both spring 
and fall, principally along the water courses. Was never very 
common in any part of the state that we can learn. Formerly 
bred at Racine, and has been known to remain at Lake Kosh- 
konong through the summer. Mr. Clark has taken it in Dunn 
County, but considers it "rather uncommon." We have seen 
it in summer along the south shore of Lake Superior, where it 
appeared to be nesting on the rocky ledges. We have several 
times had this hawk swoop down and pick up a duck we had 
just shot before we could reach it. It frequently kills a duck 
too large and heavy to carry to the shore, and in this case 
secures a firm hold in the duck's back, and flying, drags it 
along on the surface of the water to the shore. 
Falco columbarius Linn. PIGEON HAWK. 
A rather common migrant during the latter part of April, 
generally through May, and again during September and 
October. At the present time a rare summer resident in 
southern Wisconsin, but it not infrequently remains in 'he 
central and northern parts of the state. Dr. Hoys speaks of its 
nesting near Racine in 1852. Grundtvig called it abundant in 
Outagamie County in 1882-3. We have found it fairly plenty 
in several sections of the northern part of the state. Consider- 
ing the large numbers seen, and even procured, it is remarkable 
that so few are in the full blue plumage. A perfect falcon in 
every sense of the word, with all the boldness, daring and 
.dexterity of its larger relatives. 
