SUPPLEMENT TO BIRDS OF ESSEX COUNTY 155 



rattling quality may not be in the nature of a song. When disturbed at the 

 nesting-holes the birds fly about uttering a complaining or scolding double note, 

 the first loud and rasping. 



*26o [617] Stelgidopteryx serripennis (Aud.). 

 Rough-winged Sw.^llow. 



For this addition to the County I have two good records. Dr. John B. May,^ 

 with Mr. Charles Floyd and the late Mr. Barron Brainerd, saw two birds of this 

 species at Clark's Pond on May 21, 1916. He says of them: "The even brown 

 of the birds' backs first attracted Mr. Brainerd's attention, he being familiar with 

 the birds at Willianistown, Mass., at the opposite end of the State. The wings of 

 the Bank Swallows are darker than the back, when seen in flight with a good light, 

 while the Rough-wing shows all one shade of brown. As the birds flew over, the 

 brownish throat was also plainly seen, shading off over the breast into the white 

 of the belly, while the white throat of the Bank Swallows was very conspicuous 

 in comparison. The birds hunted together and probably were mated, but no nest 

 was found." 



The second record is that of Mr. A. P. Stubbs who on May 27, 1917, watched 

 for some time a Rough-winged Swallow on a telegraph wire at Flax Pond, Lynn. 



261 [618] Bombycilla garrula (Linn.). 



Bohemian Waxwing. 

 Accidental visitor from the North. 

 The record of 1877 remains unique. 



262 [619] Bombycilla cedrorum Vieill. 

 Cedar Waxwing; Cedar-bird; "Cherry-bird." 



Permanent resident, common in summer, uncommon in winter. 



Eggs: May 30 to July. 



I have observed the courtship of this bird as follows. Of three birds in the 

 top of a tree one, evidently a male, was very active. He flapped his wings 



1 May, J. B. Bird-Lore, vol. 18, p. 371, 1916. 



