loo The Ottawa Naturalist. [August 



Magnolia Warbler, Dendroica maculosa. 



Common summer resident, arriving" after the middle of May. 

 During the mating season the males are pugnacious little fellows, 

 and many fights do rivals have. They attack each other with 

 much fierceness, seizing hold with their beaks, and hitting with 

 half opened wings they sprawl about on the ground, until 

 thouroughly overcome. 



When pressing his suit to the female of his choice, the male 

 displays his colors to great advantage, as they show in fine con- 

 trast among the bright green foliage of the trees. During the 

 nesting season they frequent bush-grown pastures and such places. 

 The nests are rather roughly constructed of grass stems, and 

 lined with hair and grass blades. The cavity measures in depth 

 and diameter 1.50 inches. During the early part of June 1903, a 

 pair built a nest in two days, most of the material being taken from 

 a deserted nest oi Spizella socialis. The eggs which are from three 

 to five in a set are white, marked with olive-brown and cinnamon. 

 Both parents engage in incubation, the time required being twelve 

 days. The parents are rather shy when one is in the vicinity of 

 the nest, and will often slip quietly from the nest, as the observer 

 approaches, but in the protection of the young they display more 

 courage, and concern. The song which sounds like chee-chee- 

 chee-chee-oo although not amounting to much in quality makes 

 up the deficiency in quantity, and is sung by the male from the 

 time of arriving in May until the young are nearly fledged in June. 



Chestnut-sided Warbler, Deridroica pensylvanica. 



In this section one of the late arriving warblers, not being 

 observed until late in May. In 1898 the first noted was May 19th. 

 This species is a rather rare summer resident, and is found mostly 

 about the scrubby edges of woodlands in rather moist places. 

 The male has a beautiful song much like that of the yellow 

 warbler. He also displays great anxiety if one approaches the 

 near vicinity of the nest. 



Bay-breasted Warbler, .Dendroica casianea. 



Ordinarily this species is very rare here but during the 

 summer of 1903, it was with us in goodly numbers, and several 

 pairs were known to breed in the vicinity of Frederictpn. Th^ 



