490 List of the Birds of the a Valley, Oregon. (July, 
toward the larger end, of two shades of light-brown. They 
measured .66 by .53, .65 by .54, .65 by .54 and 65 by .52 of an 
inch. 
22. Geothlypis trichas Linn. (Maryland yellow-throat).—A very 
common little resident during summer among the reeds and 
thickets about marshes, where they breed. 
23. Geothlypis macgillivrayi Aud. (Macgillivray’s warbler).— 
A summer resident, nesting quite commonly; it is usually placed 
in the very top of a rose thicket and hardly concealed ; it is built 
of dried grass and leaves, and very loosely woven. Eggs usually 
four, pure white, sprinkled around the larger end with splashes 
and irreguiar dots of lilac, pale-brown and umber. 
24. Icteria longicauda Lawr. (long-tailed chat).—Inhabits the 
dense thickets of Spiræa during the summer, and probably breeds, 
though I have not seen its nest. 
25. Myiodioctes pusillus Wils. (green black-capped warbler).— 
Only noticed during the spring migrations. 
26. Hirundo lunifrons Say (cliff swallow).—Abundant during 
summer, breeding chiefly under eaves. . 
27. Hirundo bicolor Vieill. (white-bellied swallow).—Also abun- 
dant, nesting in holes in trees. 
~ 28. Hirundo thalassina Swains. (violet-green swallow).— Also 
abundant, nesting in knot-holes and crevices about buildings; 
have never seen their nest in any other situation ; among peculiar 
places, I saw one in a hollow east window sill, another under the 
tin top of a wooden capital, twelve feet above the sidewalk, 
another was under a sign that lay flatwise on the awning, another 
in an old hat that hung in a shed. They are decidedly the most 
familiar of the three species of swallows. 
29. Vircosylvia solitaria Vieill. (blue-headed flycatcher)— A 
common summer resident, chiefly among deciduous trees, where 
it also nests. The nest is subpensile in a low horizontal fork, neat- 
ly and compactly built of fine grass and horsehair, lined with fine 
moss and spiders’ webs, and externally covered with bits of He- 
patica and Hypnum to resemble a piece of bark. The eggs, 
usually four, pinkish-white, covered at the large end with reddish- 
brown dots and marks. The song is irregular, “ zo whit-to whee— 
to whtt-to wheo,” repeated incessantly as they flit among the leaves 
for food, their favorite tree being the large oak (Q. garryana). 
30. Ampelis garrulus Linn. (waxwing).—I obtained a pair of 
