A Two- Year Nesting Record 441 



oak, and was built of sticks on top of an old crow's nest, and was 

 lined with a few pieces of bark. 5. 



16. Red-shouldered Hawk (Buteo I. lineatus). This is our most 

 common hawk. We found eleven nests with eggs in two years. 

 Earliest date for eggs is April 6th, and latest is May 21st. In 

 climbing to these nests we were attacked only once. 



17. Sparrow Hawk {Falco s. sparverius). May 8th, 1914, a nest 

 containing five eggs was found about 20 feet up in a dead stub 

 along the edge of a field. On May 19th, 1915, four eggs were taken 

 from this same stub. There was a bluebird's nest above the cav- 

 ity occupied by the hawks. On the 29th of June the cavity was 

 occupied by a set of Flicker eggs. 4. 



18. Screech Owl {Ottis a. asio). May 20th, 1914, a nest contain- 

 ing two bad eggs and one young bird was found in a natural cav- 

 ity in a red oak. The tree was in the front yard of a home in the 

 center of Highland Park. 1. 



19. Yellow-billed Cuckoo {Coccyziis a. americanus) , July 26th, 

 1915. Nest was nine feet up on a horizontal branch of a Haw- 

 thorn tree. When the nest was first found, it contained one egg, 

 and was so thin that the egg could be seen through the bottom. 

 On the 26th the nest held a full set of three eggs, and was much 

 thicker than when first found, showing that eggs are sometimes 

 laid before the nests are completed, and also that the laying of an 

 egg does not stop the birds from completing the nest. Made of 

 twigs and grass. 2. 



20. Black-billed Cuckoo (Coccyzus erythropTithalmus) , August 

 10th, 1914. A nest was found in oak scrub, about four feet up, and 

 contained two young, which were about half grown. The nest was 

 a conical structure of twigs lined with a thick pad of oak leaves. 

 A few years ago a nest was found containing three eggs of the 

 Black-bill and one of the Yellow-bill. 4. 



21. Belted Kingfisher (Ceryle alcyon). The only nest of this 

 bird found was destroyed by the slumping of the bluff along the 

 lake during a heavy rain. 



22. Downy Woodpecker (Dryobates pitiescens medianus), June 

 10th, 1915. Two young just out of the nest, were found on the 

 ground at Ravinia. The Downy is rather an uncommon summer 

 resident in Lake County. 



23. Red-headed Woodpecker (Melanerpes erfhrocepTialus) , June 

 7th, 1914. Set of five eggs found in hickory stub in vacant lot 

 between two houses. A queer set, with one runt, one normal, and 

 one extra large egg was found on May 25th, 1914. 



24. Northern Flicker {Colaptes auratus luteus), June 12th, 1915. 

 A large set of 12 eggs, one of which was a runt, was found on 



