278 GEOLOGICAL SURVEY OF CANADA. . 
at St. Martins, on the Bay of Fundy, N.B. (Chamberlain.) One 
old bird and two young ones shot on Marble island, Hudson bay, 
1st September, 1884. (Dr. R. Bell.) Said to nest on the cliffs along 
the Humber river, Newfoundland. (L. H. Porter.) 
Yamaska mountain, at Abbottsford, about forty miles east of 
Montreal, has been a breeding place for this species for many years. 
Mr. Fisk reports that a pair of these hawks had a nest on the west 
side of the mountain, and he has observed this species there every 
year for forty years past. He took two eggs of the duck hawk in 
April, 1891, there, from under a rocky ledge; no material was used 
for the nest, only a slight hollow scratched out by the hawks under 
a shelving rock. (Wzntle.) A pair nest on Lake Muskoka, Ont., 
regularly. Mr. Taverner took a set of four eggs from the nest on 
24th May, 1898; it formerly bred on the Bruce peninsula. (J. H. 
Fleming.) On 15th April, 1894, saw a pair that were breeding in a 
hole in the high ‘‘cut bank” of the Saskatchewan at Medicine Hat, 
Sask. (Spreadborough.) 
This falcon constructs no nest whatever so far as I know. It lays 
its eggs on the most inaccessible ledge of a river cliff of earth or rock. 
Four is the usual number, and in some instances the eggs were larger 
thanin others. Allof the discovered nests were found in the country 
to the southward of the post, and it is doubtful if they breed much 
beyond lat. 68° north. Early in August, for several successive years, 
young birds of the season, fully fledged, but still attended by their 
parents, were noticed along the limestone and sandstone banks of 
the Mackenzie river. (Macfarlane.) Bishop and Osgood saw many 
nests on cliffs along the Yukon river. 
This bird breeds rarely in eastern Ontario. I saw it in April, 
1899, and the following year. A nest containing four eggs was 
taken near the Blue mountain, Leeds co., Ont., by Mr. W. G. Shel- 
bourne. I visited the locality on the 23rd April, 1901, and saw 
the birds, but they had not yet laid their eggs. The nest was 
secured later, on the 9th May, and it and the eggs are now in a 
private collection in Kingston. It also breeds at Diamond lake, 
in North Hastings, Ont., and was stiil breeding at Charleston lake, 
Leeds co., in 1905. (Rev. C. J. Young.) 
I have eight clutches of eggs of this bird, taken in Muskoka and 
northern Alberta. One set of four eggs was collected by Mr. P. A. 
