THE ROYAL ARTILLERY INSTITUTION. 
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Geotktypis triclias — (Cabanis.) 
Maryland Yellow-throat. Common on Vancouver Island and along the 
whole course of the Boundary line to the Rocky Mountains. Arrives in April, and 
leaves again in September. 
Frequents dark shady underbrush, and from its habit of creeping'among the 
bushes, is difficult to obtain, and but seldom seen. 
Helminlliophaga celaia .— (Baird.) 
Orange-crowned Warbler. Common on Vancouver Island, and along the 
entire length of the Boundary line. Arrives in April and May; leaves again in 
September. Same range,—north and south as the above. 
Myiocliocles pusillus .— (Bonap.) 
Green Black-cap Flycatcher. Found on Vancouver Island, and along the 
Boundary line to the Rocky Mountains. Not at all an abundant bird; arrives at 
Colville in April and May, and leaves again early in September; habits dense 
thickets, and is always moving about in a jerking restless manner. 
Tyranga ludoviciana — (Bonap.) 
Louisiana Tanager. I never saw this bird west of the Cascade Mountains. 
It arrives at Colville in June, generally—male birds are first seen—they then perch 
on the tops of the highest pine trees, and continually utter a low piercing chirp. 
Soon after they pair and disappear into the forest. Where these birds build I cannot 
imagine, I have sought high and low for the nest, but never succeeded in finding 
it. I am inclined to think they must build on the tops of the very loftiest pine 
trees; it leaves again in September, never assembles in flocks. It ranges south 
through Oregon and California; how far north of Colville I had no means of 
finding out. 
Hirundo tJialassina .— Swainson. 
Violet-green Swallow. This beautiful swallow is common on the coast on 
Vancouver Island, and along the entire course of the Boundary line to the summit 
of the Rocky Mountains. It is one of the earliest visitors ,at Colville, arriving in 
small flocks in March, but in greater numbers in May and June; nests in June, 
making the nest in holes in dead trees as high up as they can get. I did not procure 
the eggs as the trees had to be felled in which the nests were, and the eggs 
were invariably broken by the fall; they flock and leave again in September. 
Hirundo bicolor —(Vieill.) 
White-bellied Swallow. This swallow is common on Vancouver Island 
and along the Boundary line to the summit of the Rocky Mountains. Arrives in 
May, and makes its nest in holes in the cotton wood trees, or in old willow trees; 
the hole is lined with grass and feathers. Assembles in large flocks, and leaves 
again in September. 
A great number of these swallows nest in the old willow stumps on the Sumass 
and Chilukweyuk prairies. 
Hirundo lunifrons .— (Say.) 
Cliff Swallow. I never saw this bird on the west side of the Cascades, but 
it is very abundant between the Cascades and Rocky Mountains; arrives at Colville 
