
740 THE AMERICAN NATURALIST. (VoL. XXXVI. 
During September, 1895, daily observations were made on 
the migration of hawks at New Haven, Conn., when as far 
as possible the variety, as well as the number of hawks which 
were seen on each day, was noted. A record was also kept of 
the meteorological conditions for the same period, particularly 
the state of the weather and the velocity and direction of 
the wind. 
The observations extended over a period of twenty-three 
consecutive days, from September 6 to September 29, this 
being the month during which five or six species of hawks 
migrate southward. The object of these observations was to 
ascertain if wind from a southerly quarter not only retarded 
the migration, but practically stopped it, and also to determine 
if the migratory movement ceased when there was little or no 
wind. The observations were as follows : 
Sept. 6. Fair; wind N.E., r1 miles. 1 bald eagle; 1 fishhawk ; 2 sharp- 
shinned hawks. 
Sept. 7. Fair; wind N.E., 16 miles. 1 broad-winged hawk. 
Sept. 8. Cloudy; wind S.W., light. 1 sharp-shinned hawk. 
Sept. 9. Cloudy; wind S., light. 1 large hawk; 1 sparrow hawk. 
Sept. 10. Warm and hazy; wind S., very light. No hawks seen. 
Sept. 11. Cloudy; wind S.W., 10 miles. 1 fishhawk; 1 sparrow hawk; 
3 sharp-shinned hawks. 
Sept. 12. Fair; wind S.W., light. No hawks seen. 
Sept 13. Clear, cool; wind N.N.W., 22 miles. Several flocks of broad- 
. winged hawks of from ten to fifteen observed; 4 adult bald 
eagles; hundreds of sharp-shinned hawks, and fish, sparrow, 
and marsh hawks common. 
Sept. 14. Clear, cool ; wind N. by W., fresh. All the hawks which were 
observed yesterday, common to-day. A number of eagles 
also seen. Broad-winged hawks exceedingly abundant ; flock 
after flock passed westward over New Haven, Conn. Eighty- 
five were counted in one flock, while another equally large 
body of them was observed at the same time. These hawks 
passed over the city continually from 7 A.M. until 3 P.M. 
Sept 15. Clear, cool; wind N., light. A few hawks observed migrating 
at a high altitude. 
Sept 16. Cloudy; wind N. to S.W., light. No hawks seen. 
Sept. 17. Clear; wind S., 5 miles. 2 fishhawks; 1 sharp-shinned hawk. 
Sept. 18. Light rain; wind N.E. No hawks seen. 
Sept t9. Light rain; wind S., light. 1 fishhawk. 
Sept 20. Cloudy; wind S.W., light. No hawks seen. 

