299 



Golden-crowned Kinglet 

 Ruby-crowned Kinglet 



Wood Thrush 

 Hermit Thrush 



Regiiliis satrapa satrapa Licht. 

 Regulus calendula calendula 



( Linn. ) 

 Hylocichla musfelina (Gmel.) 

 Hylocichla guttata pallasi (Cab.) 



SUPPLEMEXTARY LIST OF MAMMALS 



Opossum 

 Fox Squirrel 



Gray Squirrel 

 Chipmunk 



Flying Squirrel 

 House Mouse 

 ]\Iole ]\Iouse 



Muskrat 

 Common Rabbit 



Raccoon 

 Skunk 

 \\'easel 



Smaller Shrew 

 Common ]\Iole 



Didclphys zirginiana Kerr. 



Sciurus niger rufiz'cnter (Geof- 

 froy) 



Sciurus carolineusis Gmel. 



Tamias striatus hysteri (Rich- 

 ardson) 



Sciuropterus volans (Linn.) 



Mus niusculus Linn. 



Microtus pinetoruni scalopsoides 

 (Aud. and Bach.) 



Fiber sihcthicus (Linn.) 



Sxlz'ilagus floridanus niearnsi (Al- 

 lien) 



Procyon lotor (Linn.) 



Mephitis niesomclas aria (Bangs) 



Putorius novehoracensis Emmons 



Blarina parva (Say) 



Scalopus aquaticus madirinus 

 (Rafinesque) 



RELATIOX OF THE WOODLAXD VERTEBRATES 

 TO THEIR EXVIROXMEXT 



The principal factors that influence the vertebrates of Bates woods 

 are similar to those which are influential in detennining the character 

 of the vertebrates of the prairie area (Station I) : vegetation, topo- 

 graphy of the region, climatic conditions, invertebrates, the verte- 

 brates themselves, and the surrounding region. 



The vegetation of the woods afifects vertebrates directly by giving 

 them places of concealment from their enemies and shelter from the 

 elements, and also by furnishing them with food to a certain extent. 

 The food thus provided by the plants of Bates woods is chiefly fruit. 

 There are many plants there that bear fruits known to be acceptable 

 to birds, important among which are the following : mulberry, sassa- 

 fras, poison-ivy, smilax, blackberry, sumac, wild grape, wild cherry, 

 June-berry, pokeberry. woodbine, flowering dogwood, bayberry, and 



