Page:Condor14(4).djvu/42

152 THE CONDOR Vol. XIV naevius? Hylocichla guttata sequoiensis and Planesticus migratorius. This makes a Colorado list of 403 species about which there cannot be much question. There is still left a list of seven species about which opinions would differ as to whether or not they are entitled to a place in the'list--Meleagris gallopavo silvestris. Phalaenoptilus nuttalli nitidus, Muscivora forficata, Otocoris alpestris enthymia, Loxia curvirostra stricklandi, Junco hyemalis anncctens, Protonotaria citrea. The breeding records of the Colorado birds have been given by Sclater a much-needed revision, with the result of dropping from the list of breeders several species that had been included by Cooke in his several lists. Lophodytes cucullatus. Omitted by Sclater from the list of breeding birds, because, although seen several times in summer, there is no definite record of its nesting. 8trix occidentalis. Not considered by Sclater a breeding species, although it is not known to be migratory in any part of its range. Phloeotomus pileatus abieticola. This non-migratory bird is placed in the general list, but not in the list of breeders. The Colorado list would probably have been improved had the species been omitted altogether. Compsothlypis americana usneae. Sclater is undoubtedly justified in withdrawing this species from the Colorado breeding list, and the same remark applies to the cases of Dendroica striata, Dendroica townsendi, and Pelecanus erythrorhynchos. The reason for denying the latter species a place in the breeding list is not so clear as in the case of several other birds. Marila affinis. Omitted by Sclater, though it has been recorded as nesting at Barr Lake (Condor x?, 1909, 112). In a recent letter Hersey says: "On two different years I have found nest and eggs of the Lesser Scahp at Barr." Egretta candidissima. Sclater includes this in his list of breeders with a question mark? and under the heading of the distribution of the species he says that it breeds "throughout its range." The queer fact has lately come to light that many a?dult Snowy Herons migrate in the spring far north of the breeding range and remain there through the summer as non-breeders..The habit of northward migration. in the fall is common among herons, but the Snowy Heron is unique among North American birds in its northward migration in spring of non-breeders. The Snowy Heron does not breed nearer to Colorado than Louisiana. Grus mexicana. Omitted by Sclater from his list of breeding birds, but a late record of nesting is mentioned in the body of the work. Pedioecetes phasianellus columbianus. Sclater includes campestris in the list of breeders, but not columbianus, and seems rather doubtful about the latter occurring in the state. The facts are that all sharp-tailed grouse now in Colo- rado are almost typical columbianus and that the form different from colum- bianus, which used to occur in great numbers in northeastern Colorado, is now extinct in the state. Astur atricapillus striatulus. Sclater gives Astur atricapillus as a "rather nncommon winter bird in Colorado," and says that it breeds "south perhaps to Idaho." While it is true that there is no specific record of a nest of a goshawk found in Colorado, yet the bird has been noted in summer in the state by several competent observers--among which records may be mentioned Lone Cone, near Coventry, July 27, 1907 (C. H. Smith); not rare July 6-17, 1905, in Middle Park