OF ARTS AND SCIENCES 85 



season the song was heard for the first time by the Ammonoosiic 

 River, near Fabyan's, where the elevation is 1400 feet. In early 

 September one or two birds are sometimes seen which may be 

 migrants. On September 18, 1907, one was observed in the 

 grove of birches at the Meadows. This is the latest record for 

 the species. On September 3, 1910, two were seen near Cherry 

 Pond in a considerable company of migrant warblers. 



147. Dendroica cserulescens c^erulescens. Black 



THROATED BluE WaRBLER. 



A common summer resident in all woodland and mixed 

 forest on the lower mountain slopes. Three to five pairs nest 

 in the fifty-acre piece of Highland woodland and several pairs 

 on the higher slopes of Boy Mountain to the summit. In follow- 

 ing the trails on the Great Range the song is heard after the 

 song of the Black-throated Green Warbler has been left behind. 

 In Jefferson Notch a bird is regularl}^ heard at nearh' 3000 

 feet elevation. Although the song period proper extends to 

 about the middle of Jul}^, after which there is a time of silence, 

 the song is heard at intervals throughout the remainder of the 

 summer and sometimes to the middle of September. The latest 

 records of a bird seen are : October 4 in 1901, October 3 in 1903, 

 October 4 in 1904, October i in 1905, October 4 in 1906, a male 

 in full song, October 6 in 1907, and October 5 in 190S. None 

 were seen later than September 20 in 19 10, all the warblers 

 seeming to disappear earlier than usual that season. 



148. Dendroica coronata. Myrtle Warbler. 



A rather uncommon summer resident in coniferous growth 

 on the Highland and in the valley, and a fairly common summer 

 resident of the upper forests of the Presidential Range even to 

 scrub growth, also of the lesser mountains to their summits, 

 namely. Boy of 2250 feet elevation and Starr King of 3900 feet. 

 It is also an abundant fall migrant. The song is seldom heard 

 after the middle of July. 



