our warblers 133 



Pine Warbler 

 Dendroica vigor si 

 One of the hardiest of the warblers is the Pine, the first migrants 

 nearly always arriving soon after the Myrtle. Although the spring 

 of 1917 was very "backward," the Pine Warbler was not abundant 

 at any time. No note was heard that spring, and the quiet manner 

 of the species and its plain plumage make it one of the most difficult 

 to identify. 



Palm Warbler 

 Dendroica palmarum 

 This species and the Yellow Palm are abundant in spring. 

 Of the two the Palm is with us much longer. It usually arrives 

 late in April, after the Myrtle, but not until about the middle of 

 May does it become abundant. The love of low situations makes 

 this warbler one of the easiest to observe. It is one of the few 

 warblers that "teeter" their tails. 



Connecticut Warbler 

 Oporornis agilis 

 I do not think that I have any spring records of this species, 

 but in some autumns it is not uncommon. It is certainly baffling 

 to try to explain why this species should take a different route of 

 migration in spring. As the warblers do not sing in autumn, I 

 have never heard the note of the Connecticut Warbler. 



Mourning Warbler 

 Oporornis Philadelphia 

 This very rare warbler I have recorded but twice in twelve 

 years — in May, 1915 and 191 7. It keeps low and moves slowly, 

 thus giving the observer plenty of time to see it well. Fortunately 

 both specimens that I saw were males, and easily distinguished 

 from the Connecticut Warbler. I have never heard the song of the 

 Mourning Warbler. 



Maryland Vellowthroat 

 Geothlypis inch as 

 As this warbler breeds with us, and its loud song is frequently 

 heard, there is no difficulty in finding and observing the bird. 

 It is not timid either, and may be easily approached. In fact, if 

 these warblers hear you making any noise, they are likely to come 

 out of cover to see what it all means. The young birds are fledged 

 early in July. 



