ILLUSTRATIONS. 



Figure. Page. 



1. Portrait of Dr. Bert Heald Bailey 1-1 



2. The level Kansan drift plain of northeastern O'Brien county 



(Lees) .". 20 



3. The rolling prairie of the Kansan drift plain of northeastern 



Washington county (Alden and Leighton) 21 



4. The palisades of the Cedar near Mount Vernon (Norton) 24 



5. The deep valley of Mississippi river south of Lansing (Calvin) 25 



6. The flood plain of the Mississippi below McGregor (Calvin) 25 



7. A forested glacial ridge (paha) in Bremer county (Norton) 29 



8. A planted grove along the prairie highway in Sac county (Mac- 



bride) 29 



9. The shores and island at Oakwood Park, Clear Lake, Cerro Gor- 



do county 31 



10. Dead Man's Lake, a swamp at the south foot of Pilot Knob, 



Hancock county (Macbride) 



11. The forest filled valley of Little Sioux river at Sioux Rapids, 



Buena Vista county (Macbride) 35 



12. The loess hills bounding the Missouri valley north of Turin, 



Monona county. The flood plain is visible in the distance 

 (Shimek) 



13. Map of Iowa showing life zones 39 



14. The Turkey Vulture 46 



15. Map showing the distribution in Iowa of the Turkey Vulture 48 



16. The Swallow-tailed Kite 51 



17. Map showing the distribution in Iowa of the Swallow-tailed Kite 53 



18. The Mississippi Kite, young bird 56 



19. Map showing the distribution in Iowa of the Mississippi Kite 58 



20. The Marsh Hawk 60 



21. Map showing the distribution in Iowa of the Marsh Hawk 63 



22. The Sharp-shinned Hawk, adult 68 



23. The sharp-shinned Hawk, juvenile male, with Nuthatch 68 



24. Map showing the distribution in Iowa of the Sharp-shinned Hawk 71 



25. Cooper's Hawk, adult 74 



26. Cooper's Hawk, young female 75 



27. Map showing the distribution in Iowa of Cooper's Hawk 77 



28. The Goshawk or Big Blue Hen Hawk 82 



29. The Goshawk, another view 82 



30. Map showing the distribution in Iowa of the Goshawk 85 



31. Map showing the distribution in Iowa of the Western Goshawk ... 88 



32. Harris's Hawk (photo by Professor H. R. Dill) 90 



33. Map showing the distribution in Iowa of Harris's Hawk 91 



34. The Red-tailed Hawk.... 93 



