29 



length, 5-63; stretch, 8-94; wing, 2-95; tail, 2-12; bill from nostril, 

 30; tarsus, -72. 



36. Dendroecapennsylvanica, (Linne). CHESTNUT-SIDKD WAR- 

 BLKK. A summer resident; breeds abundantly. Arrives early in May 

 (11, 1874; 12, 1875; 9, 1870; 15, 1877; 3, 1878; 7, 1879), and departs 

 late in September (30, 1870). 



The Chestnut-sided Warbler is the only species of its genus that 

 breeds abundantly with us. Its nest is, placed in the fork of a low 

 bush; and its eggs, four in number, are deposited about the last of 

 May, or early in June. I have found the female sitting as early as 

 May 20th (1877). It possesses a song of considerable power and 

 sweetness; utters a sharp tsip while gleaning among the branches. 

 The young birds follow the parents, and usually frequent damp thick- 

 ets. They are quite gentle, coming close up to the observer, and 

 uttering a low squealing note, as if demanding food. The parent sits 

 very closely upon its nest; if disturbed, it refuses to remove farther 

 than a few feet, there remaining quite silent, except a soft, pleading 

 note, occasionally repeated. 



Dimensions. Average measurements of sixteen specimens: length, 

 5-14; stretch, 7'80; wing, 2-45; ta.il, 2-00; bill from nostril, -29; gape,. 

 52; tarsus, -72; middle toe, -38; its claw, -17. 



37. Dendrceca maculosa, (Gmelin}. BLACK-AND-YELLOW WAR- 

 BLER. A common spring and fall migrant. Arrives the second week 

 ill May (15, 1874; 11, 1875; 10, 1870; 14, 1877; 8, 1878; 8,1879), re- 

 maining till late in the month (May 22, 1875; 28, 1870; 25, 1878); in 

 autumn it arrives in September (11, 1870; 0, 1879), and departs in 

 October (5, 1870). This beautiful species is partial to the hemlock- 

 trees, where it feeds in company with the Black-throated Green War- 

 bler; but it is found in all kinds of woods. It frequently descends to 

 the ground ; sometimes inhabits low bushes. 



Dimensions. Average measurements of nineteen specimens : length, 

 5-12; stretch, 7-07; wing, 2-30; tail, 2'00; bill from nostril, -30; gape, 

 53; tarsus, -74; middle toe, -38; its claw, -17. 



38. Dendrceca tigrina, ((.rmeliii) . CAPE MAY WARBLER. A 

 rather rare migrant. Mr. Win. K. Lente took a male, at Cold Spring, 

 on the Hudson, May 20, 1875. Mr. Win. C. Osborn took a female, at 

 Garrisons, on the Hudson, May 15, 1870. Mr. Chas. Simpson found it 

 abundant at Peekskill, during the spring of 1877, when he procured a 

 number of adult specimens. In this locality, the Cape May Warbler 

 is seldom seen in spring. A fine male was shot, by Mr. Win. C. Os- 

 born, near his residence, on the opposite side of the Hudson, on May 

 14, 1878; but in autumn it is generally seen in September, on its way 

 to the South. I have observed it from September 8th (1870) to the 

 2Uth (1875). It is seen in the tree-tops, where its movements appeared 



