21 6 LIFE-MISTORIES OF 



to become more adherent and impacted on ex- 

 posure to the elements, and the necessity of a 

 tin id can be dispensed with. 



After the nest is finished, the female commences 

 on the ensuing day, the duty of oviposition, which 

 proceeds at the rate of a deposit of one egg per 

 diem, until her complement has been laid, \vhich 

 requires from three to four days. Incubation 

 commences on the day succeeding the last deposit, 

 and requires a period of 1 1 days. In this duty 

 we have known the male to perform his share of 

 the labor. While the one is thus engaged, the 

 other is absent from the immediate neighborhood, 

 either designedly, or in quest of food. When the 

 nest is assailed, there are manifestations of un- 

 easiness; but the earnest scolding and hoarse 

 mewing that are so peculiar to its near cousin, the 

 Vireo noveboracensis of Bonaparte, are traits which 

 it has not developed. 



The young are assiduously fed by their parents 

 until sufficiently matured to look after their own 

 temporal concerns. During their state of helpless- 

 ness, they are nourished with the larvae of Ani- 

 sopicryx veruata, A, pome tar la, Zerene catenaria, 

 Hybernia tiliaria, Ennomos subsignaria, JLimacodes 

 scapha, and mature forms of Musca domes tica, 

 Tabanus lineola, Tipula ferruginea, aphides, and 

 small spiders. In about 1 2 days they leave the 

 nest, and in a week longer they are prepared to 

 earn their own subsistence. 



There is but one brood in a season, although 



o 



