346 NESTS AND EGGS OF 



built in the horizontal branches of trees, usually from five to twenty- 

 five feet above the ground, sometimes much higher. Like other 

 nests of the birds of this family, it is pensile a beautiful little well 

 woven, pendulous cup, its rim being attached to a horizontal fork of a 

 branch in the thick foliage. It is made of vegetable fibres, strips of 

 pliable bark, etc., lined with fine, round grasses, sometimes mingled 

 with horse hairs and bits of newspapers. On two occasions I have 

 found the nest containing two or three eggs before the frame-work was 

 nearly completed in fact the nests in both cases were not ready for 

 the reception of the eggs, and were finally completed by the female 

 with material carried by the male bird. 



Three or four eggs are generally laid, rarely five, pure white, 

 sparsely sprinkled with fine, dark reddish-brown dots, chiefly at the 

 larger end. Ten eggs measure .82 x .56, .80 x .56, .82 x .58, .84 x .59, 

 .85 x .58, .87 x .54, .87 x .56, .85 x .53, .86 x .53, .88 x .54. The average 

 size of these ten specimens is .85 x .56. 



626. Vireo pMladelpMcus (CASS.) [138.] 



Philadelphia Vireo. 



Hab. Eastern portion of North America, north to Hudson Bay; south in Winter to Guatemala 

 and Costa Rica, etc. 



This is apparently not a very common bird, wherever found in 

 Eastern United States. From its close resemblance to the Warbling 

 Vireo, the bird is doubtless often confounded with that species. In 

 portions of the Mississippi Valley it appears to be more common than 

 in the Eastern States, occurring regularly and in considerable numbers 

 during the spring and fall migrations. In Ohio it is not a very com- 

 mon spring and fall migrant in May and September. 



From the best information at hand, the Philadelphia or Brotherly- 

 love Vireo breeds chiefly north of the United States. Mr. Ernest E. 

 Thompson found a nest of this species containing four eggs near Duck 

 Mountain, Manitoba, June 9, 1884. These were probably the first au- 

 thentic eggs of this species on record. The nest was hung from a forked 

 twig, about eight feet from the ground, in a willow which was scant of 

 foliage, as it grew in the shade of a poplar grove. The nest was pen- 

 sile, as usual with the genus, formed of grass and birch bark. The 

 eggs presented no obvious difference from those of the Red-eyed Vireo. 

 The eggs were accidentally destroyed before they were measured.* 



627. Vireo gilvus (VIEILL.) [139, 1390-] 



Warbling Vireo. 



Hab. North America in general, from the Fnr Countries; south in winter to Mexico. 



The Warbling Vireo, in its two forms, inhabits North America in 



Auk, II, 305-306. 



