( xviii ) 



*®* 



The following T ATJT.KS nro divided into two Sections. The first section contains an enumeration of the Spring 

 and Summer Birds of Passage. All these, with the exception of a very few, which may be called Hesident Birds, 

 come from the south. The greater part of them are known to build and breed in Pennsylvania. At the close of 

 the summer and in the autumn, they retire agidn to the south, and visit us in the Spring. 



The second section is devoted to the Autdmn.^l and Winter Birds of Passage. These passengers may be di- 

 vided into two classes : viz. I. The Spring and Summer Birds of Passage, which are now on their return to the 

 south. In strict propriety, these ought not to be considered as Autumnal and Winter Passengers : for they leave us 

 in cold weather, either because they are incapable of supporting the severity of the winter-season, or because they 

 cannot, during this season, procure a sufficiency of their proper and favourite food. Perhaps, for both these causes. 

 II. The second class comprehends the real Autumnal and Winter Birds of Passage. These, compared with the Spring 

 and Siuumer Birds of Passage, are very few in number. They all come from the north, and either winter with us 

 or in the southern states. In the spring (frequently very early in the spring), they retire northerly, where they 

 build, breed, and rear their young. 





In the Introduction, page il. }. XVI. fur FringUla melodia, read Turdiu Polyglottos, or Mocking-Bird. 



page XTi. i. XXXVI. (in a few of the copies), the last line, for uniformly, read alwaiit. 

 In the TableB, page », for Scolopai Candida. (Plover.) read Tringa Squatarola? Grey Sandpiper? (Plover.) 



page J, for Golden-Crowned Trush, read Golden-Crowned Thrush. 

 In Appendix I, page 16, under the head of Uirundo purpurea, for, when it supposed, &c. read, when it is supposed, &c 



