Woop—MersHon EXpepirion, CHARIty ISLANDS. “ 81 
the hawks and owls cannot find suitable food there, as mice 
and other small mammals are absent. 
Novrrs ON THE FALL MIGRATION. 
It is no doubt largely owing to their situation that the 
islands are used as a stopping and feeding place by the birds 
on their migrations. As it is, thousands of individuals alight 
here on the spring and fall migrations. 
Nearly all of the waders came to the island during the day 
time. Most of the flocks were seen just at daylight or sun- 
set, coming from the direction of the mainland, but others 
arrived at other times during the day. Several hawks, in- 
cluding the duck hawk, pigeon hawk, sparrow hawk, and 
sharp-shinned hawks, were also seen as they came to the 
island from across the bay, generally early in the morning or 
in the forenoon. On September 10, about 11 A. M., eight 
black-bellied plover and six golden plover came to Light-House 
Point, and small flocks of the former were seen coming from 
the west all day. 
The winter species invariably came just before or during a 
cold north wind, and the American pipits, horned larks and 
Lapland longspurs came during the daytime. In Michigan 
we have very few records of the horned lark (Ofocoris 
. alpestris alpestris). Our resident form is O. a. praticola, a 
prairie form that has entered the state from the south and 
west, probably since it became settled. The first record for 
the horned lark was on September 18, for the pipit September 
19, and for the longspur September 30. This was before the 
last great migration wave of warblers, which occurred Octo- 
ber 5-6. The theory that the northern species are driven 
south by severe storms or a scarcity of food in their summer 
home is hardly in harmony with these facts. The snowflake 
was found on the beach at Caseville on October 12, and the 
northern shrike was found on the island October 7. 
The species that migrate at night were studied by observ- 
ing them as they passed the light, and by making a careful 
daily census of the bird life.of the island. While it is a well 
