Notes on the Different Birds. 
189 
longest and equally long. 3. The color of the two species is 
different. V. philadelphicus is (in spring plumage) not “whiten¬ 
ing on throat,” but strong yellow on neck and breast. A dis¬ 
tinct gray stripe runs from the bill through the eye. V. gilvus 
is white or dirty white on neck and breast, yellowish only on 
the sides under the wings. It has no distinct stripe through 
the eye. In 1882 I shot a male May 23. Probably there were 
more. In 1883, I learned by close study to recognize this 
species even in the tops of high trees. The first was shot May 
19. Tolerably numerous and seen often in warbler-flocks from 
24th-28th. King has not met this species in Wisconsin. 
Neither was it seen by Cooke in Jefferson Co., nor by Willard 
in Brown Co. 
137. Tireo gilyus (Vieill.). XX M. of 10. L. 139-144. 
E. 213-230. W. 72-74. T. 50-54. B. 9-11. It is a ques¬ 
tion whether the Shiocton form is not a variety. The color is 
pale, especially the yellow, which sometimes is wanting even 
on the sides under the wings. Upper mandible almost 
wholly black. 2nd primary usually 2 mm. < 6th and 3J- mm. > 
7th. This Vireo builds in many places, but generally on the 
margins of rivers and always in very high trees. I saw a 
great many nests but examined only two on the banks of the 
Shioc River, not far from the house-. The one, June 13, 1883, 
contained 3 new-laid eggs. Placed in an elm 32 feet over the 
water. The other, June 14, 3 slightly incubated eggs. Placed 
in a maple 30 feet over the water. M. from these nests (6 
eggs) L. 19J-20|-. B. 14-J-. In 1882 the first was shot May 9. 
Not plenty before the 18th. In 1883 several were seen May 8. 
Afterwards often in warbler-flocks. Most about May 17. 
138. Tireo flayifrons (Vieill.). XX M. of 9. L. 133-148. 
E. 223-245. W. 74-82. T. 50. B. 13. In migration time 
much commoner than V. gilvus , but not nearly so abundant in 
breeding season. I saw only a few in June, mostly near the 
rivers, and I was not so fortunate as to find any nest. In 1882 
the first was shot in a flock of warblers May 8. Very plenty 
about May 14. Still more the 18th. Migration ended the 23d. 
In 1883 the first was shot in a flock of warblers May 5. After¬ 
wards only a few before May 12, when several were seen. Most 
