66 Lincoln, Birds of the Clear Creek District, Colo. [j a u n k 



Accipiter cooperi. Cooper's Hawk. — Rare. One seen a few times 

 in the winter of 1908-1909, and another February 5 and 12, 1910. 



Astur a. atricapillus. Goshawk. — Rare or accidental. The only 

 record is one found dead by Mr. Rett, February 25, 1917. Near it were 

 the remains of a large Plymouth Rock hen. 



Buteo b. calurus. Western Red-tail. — The commonest large hawk. 

 One taken October 5, 1907, had both feet, the mandible, and a quantity 

 of flesh of a chicken apparently freshly killed, in its crop. This is the only 

 instance of their attacking poultry that I have ever noted and it is of 

 course possible that this may have been taken in the form of carrion. 



Archibuteo 1. sancti-johannis. Rough-leg. — Seen occasionally 

 during the winter. On December 26, 1910, I surprised one feeding on a 

 house cat that I had killed a week before. 



Aquila chrysaetos. Golden Eagle. — Seen occasionally around the 

 foothills. 



Falco mexicanus. Prairie Falcon. — Summer visitant. Nests in 

 the Garden of the Red Rocks, eight miles to the south, but only seen in 

 this district when on foraging expeditions. 



Falco s. sparverius. Sparrow Hawk. — Rare. A pair, evidently 

 preparing to nest, taken April 8, 1911, now mounted in the collection of 

 Colorado birds at the Museum, are referable to true sparverius. 



Falco s. phalaena. Desert Sparrow Hawk. — All other specimens 

 secured seem referable to this variety, which is a plentiful summer resident. 

 A set of five eggs was taken from an old Magpie's nest, May 22, 1909, 

 although woodpecker holes are usually preferred. 



Asio wilsonianus. Long-eared Owl. — Resident; common at times. 

 On April 8, 1911, in a patch of timber and weeds about an acre in extent, 

 one Rocky Mountain Screech, one Long-eared, one Short-eared and one 

 Western Horned Owl, were seen. On December 31, 1909, six Long-eared 

 Owls were noted, three of them being together in an old Magpie's nest. 

 This species is occasionally noted hunting in the daytime. 



Asio flammeus. Short-eared Owl. — Not common. In addition 

 to the one noted above, I have one taken February 19, 1910, but Mr. Rett 

 reports 12 observed in a low swampy field, November 25, 1917. 



Otus a. maxwelliae. Rocky Mountain Screech Owl.- — Common. 

 Nests by the first of April in old woodpecker holes. The usual operation 

 of pounding smartly on the tree is not always efficacious in bringing them 

 out, some having to be pulled bodily from the hole, an operation they are 

 well fitted to resist. Some holes seem to be especially favored and I have 

 taken as many as five different birds from one Flicker hole in one season. 



Otus a. aikeni. Aiken's Screech Owl. — Rare. A few specimens 

 have been taken that are nearly typical of this small form. 



Bubo v. lagophonus. 1 Northwestern Horned Owl. — The specimen 



i Cf. Oberholser, Proc. U. S. Nat. Mus., 1904, p. 185. This form is not separated from 

 B. v. saluralus in the A. O. U. Check-List. 



