gg SINGIXf; RTRnS — OSCINES. 



showing themselves. In the spring, however, the male often flies upward a 

 few yards, singing a short hut lively song, generally in triple liars, and tlien 

 drojjs su(klenly down again. 



Their nest is built in the thickest, often on the ground, very closely con- 

 cealed ; it is made entirely of grass and leaves. Tlie eggs are white, slightly 

 flesh-color, with reddish-brown dots, specks, and lines, mostly near the 

 large end. 



They generally keep near lirooks and marshes. 



Geothlypis Macgillivrayi, jVuuubon. 



MACGILLIVKAY'S WARBLER. 



Si//n'a MacqiUb-miji, Audubon, Orn. Riog. V. 18.39, 75; pi. .399. {Si/hia Philadelphia on 



plate.) Triclias Maa/illicrai/i, Audubon, Syn. 18:39, 64. Ib. Birds Amcr. II. 1S41, 74 ; 



pi. 100. 

 Si/lfia tolmini, Townsend, J. A. N. Sc. VIII. 18.39, 149, 1.59. (Read in 1S39, but the volume 



really not published till 1840.) — Triclias tohnicei, NuTTALL, Man. 1. lid ed. 1840, 460. — 



Heeumanx, r. R. Rep. X. vi. 40. 

 (hothlypis Maci/iUivmi/i, Baird, P. R. Rep. IX. Birds of N. Amcr. 244 ; pi. 79, f. 4 (head). 



— Cooper and Sucklev, XII. iii. Zool. of W. T. 177. 



Sp. Cii.\I!. Head and nock all round, throat, and fore part of the breast clark ash- 

 color ; a narrow frontlet, loral rej^ion, and spaee round the eye (seareely complete bclund), 

 black Tlie eyelids above and below the eye (not in a continuous rinfr), white. The 

 feathers of the chin, throat, and fore breast really black, with ashy-f^i-ay tips, more or less 

 concealing the black. Rest of upper parts dark olive-green (sides under the wings paler), 



of lower, bright yellow. Fi male with the throat paler and without any black. Young in 

 fall, without the blue hooil, and of a dull greenish color generally. Length of male. 5.00 ; 

 extent, 6.7.5; wing, 2.4.5; tail, 2.45. Iris brown; bill brown above, yellow below ; feet 

 rcdcli.sh-gray. 



Hah. Eastern base of Rocky "Mountains to the Pacific, and south to I\[c.xico. 



At Fort Mojave I noticed tlie first of this species A]iril l'4tli, but they 

 probably arrive earlier, as they reach the Columbia Itiver by j\Iay 3d. 

 They diiler considerably in habits from G. irichas, as they frequent dry 



