NATURE'S CALENDAR 7,^ 



Tree Sparrows. — Depart North tliird \A-eek. 

 Chipping Sparrows. — Arrive from South first 

 week. 



Field Sparro7i's. — Arrive from South first 

 week. 



Sno'cu-bircis (Junco). — Depart North fourth 

 week. 



Swamp Sparrotus. — Arrive first week. 



Fox Sparrows. — Depart North second week. 



C/iewiyiks, or Totvhees. — Arrive third week. 



Purple ]\Iartins. — Arrive from South second 

 week. 



Eave , or Cliff Swallows . — Arrive fourth week. 



Barn Swallo'ws. — Arrive from South third 

 week. 



Tree S^vallows. — Arrive from South first 

 week. 



Bank Swallo-ws. — Arrive from South second 

 week. 



Rough - winged S7uallo7vs. — Arrive from 

 South second week. 



Northern Shrikes. — Depart North second 

 week. 



l\ed-eyed Vireos. — Arrive from South fourth 

 week. 



Yellow-throated Vireos. — Arrive first week. 



Blue-headed Vireos. — Pass North fourth week. 



White-eyed Vireos. — Arrive fourth week. 



Black -and -White W^arblejs. — Arrive from 

 South fourth week. 



Black-throated Blue and Yelloiv-runiped, or 

 Myrtle Warblers.-— F&ss, North fourth week. 



Jlfagnolia, Blackburnian, and Black-throated 

 Greeji Wai'blers. — Pass North second and third 

 weeks. 



Yellozu Redpoll, or Palm Warblers. — Pass 

 North fourth week. 



April 25 



