Atlantic Coast its winter range extends from British Guiana to the 
mouth of the Amazon River. Between these two ranges it migrates 
over all the intervening regions, where it can find suitable country, 
but mainly along the Pacific and Atlantic coasts. On the Pacific 
Coast the spring flight progresses slowly northward, reaches Alaska 
about the middle of May, and arrives on the breeding-grounds in 
northern Mackenzie by the end of May. 
Very little seems to be known about the nesting-habits of the 
Hudsonian curlew. Mr. MacFarlane found them breeding on the 
treeless Arctic tundra near the mouth of the Anderson River, where 
he took several sets of eggs late in June and early in July; the nests 
were merely depressions in the ground lined with a few withered 
leaves J. O. Stringer described a nest which he found on the lower 
Mackenzie River as a pile of grass, moss, and weeds, on an island in 
the river. Joseph Grinnell reported this species as breeding in the 
Kowak Valley between June 14 and 20, 1899. The eggs vary in 
color from a creamy drab to a brownish buff, and are more or less 
heavily spotted with various shades of brown. The downy young 
have apparently never been described, and nothing seems to be known 
about the early plumage changes. Young birds in the fall can be dis¬ 
tinguished from adults by their shorter bills and by the conspicuous 
buff spots on the upper parts. 
The Hudsonian curlew is more of a littoral species than either 
of the others, and seems to prefer to frequent and feed on the sea- 
coast. At low tide it resorts to the recently uncovered flats and 
beaches, where it can pick up marine insects, worms, and small crus¬ 
taceans. 
Like most of the northern-breeding shore-birds, the Hudsonian 
curlew moves off its breeding-grounds as soon as the young are able 
to shift for themselves, and begins its summer wanderings, or starts 
on its southward migration, early in July. The two main lines 
of flight are down the east and west coasts of the continent, but a 
more scattering flight passes through the central valleys and plains. 
As with all the shore-birds, the early flights are composed almost en¬ 
tirely of adult birds, and the flights of young birds follow, on an aver¬ 
age, about a month later. 
63 
