1909] The 1907 Alexander Alaska Expedition. 215 
found to be four feet high, and six feet four inches across one 
way by six feet eleven inches across the other. The cavity was 
seven inches deep by sixteen inches across and was lined with 
moss, grass and duck feathers. The eggs are the largest of which 
I can find any record. (See Bendire, Life Histories, I, 1892, 
page 280.) They measure 78 X 58.5 and 75.5 & 60. They are 
rounded ovate in shape; the shell is rough, clear white, and 
shghtly nest-stained. 
Falco peregrinus anatum Bonaparte. Duck Hawk. 
An adult female (No. 32) and three young (Nos. 33-35) were 
obtained at Danger Point, near Killisnoo, Admiralty Island, 
Alaska, June 18. Neither the adult nor the young am I able to 
identify with the form pealei generally supposed to take the 
place of anatum in the northwest coast belt. Yet Admiralty 
Island is in the heart of the Sitkan District. I compared the 
adult and one of the young with the accessible specimens in the 
United States National Museum, with the result that they ap- 
peared to me identical with the average of corresponding plu- 
mages among Atlantic Coast specimens. The differences between 
pealei and anatum are claimed at best to be slight. 
The young above referred to were taken from their nest June 
16, and were kept alive for different lengths of time. The nest 
was situated under the roots of an alder bush that drooped over 
the verge of a cliff a hundred feet above the breakers. Dueck 
hawks were noted elsewhere only at South Marble Island, Glacier 
Bay, July 5, where one was seen by Dixon; and at Bear Bay, 
and Red Bluff Bay, Baranof Island, where Stephens saw indi- 
viduals in August and June, respectively. 
Pandion haliaétus carolinensis (Gmelin). American Osprey. 
The osprey was strangely scarce in this region, where it is 
generally supposed to be numerous. A lone individual was seen 
in May and June about the chain of lakes back of Mole Harbor, 
Admiralty Island. Dixon noted four or five at Killisnoo, June 
14, and on Glacier Bay Stephens records it as occasionally seen. 
No specimens were taken. , 
