350 



*SrLVicoLA Americana, Lath. Yellow-tbroated Black Warbler. 



Common. The beautiful pensile nest of this bird has never, to my knowledge, 

 been discribed. Audubon undoubtedly eired iu atti'ibuting the ne-st described by 

 him to this species Tliat presented by me to tlie collection of the Academy, is 

 formed by interlacing and sewing togetuer, with a few blades of grass, the pendant 

 lichen (Usnea barbata) whioli grew u^pon a dead hcrizontal branch of an oak, 

 fifty or sixty feet from the ground. A hole, just huge enough for the bird to enter, is 

 left in the angle immediately umler the branch, wiiio.h forms a complete roof for the 

 nest ; it is finished with a shght lining of hair. The whole forms a beautiful bas- 

 ket of moss, which is s > admirably ad.ipteti to the purpose intended, so effectually 

 concealed, so light and airy, that it would be almost impossible to suggest an 

 improvement, and is certainly one of the most interesting specimens of ornitholo- 

 gical architecture. Ths eggs, four or five in number, are white, with a band of light 

 brown spots near the greater end ; they measure 5 by 7}^ lines iu diameter. The 

 youngleave the nest about the first week in July. 



Stlvicola Canadensis, Linn. Spotted Canada Warbler. 



Abundant from the 5th to 25th of May, and again from the 1st to 20th of October. 



SrLvicoLA Formosa, Bonap. Kentucky Warbler. 

 Rare. Shot one near Racine, May lOth, 1851. 



*SrLvicoLA CcERULEA, Wilson. Blue-grey Warbler. 

 Not common. A few nest with us. 



Stlvicola Maritim A, Wilson. Cape May Warbler. 



By no means a rare bird during the month of Maj'. It frequents the vicinity of 

 streams and swamps that abound with tall willows, in the tops of which this inter- 

 esting warbler is commonly seen flitting about, busily saarching for insects and their 

 larvse. It is probable that a few nest in this vicinity. 



*Teichas Marylandica, Wilson. Yellow Throat. 



Common. • 



Trichas Agilis, Wilson. 



Not uncommon. I shot a pair on the 23th of May ; they had mated, and were 

 about to nest. 



Teichas Philidelphia, Wilson. Mourning Warbler. 

 Rarely seen. Shot one May 10th, 1851. 



*Vermivora Pennstlvanica, Svrain. Worm-eating Warbler. 

 A few nest in this section. Rare. 



*Vermivora Chrtsoptera, Linn. Golden winged Warbler. 

 Not uncommon. Nests with us. 



'O 



YiaiMivoRA RuBRicAPiLLA, Wilson. Nashville Warbler. 



Common for two weeks in May on tlieir passage north ; they return in October, 

 at which time the male is without the chestnut crown. 



*Vermivora Celata, Say. Orange-crowned Warbler. 



Not an uncommon species. Frequent the most secluded swamps, where they nest. 



