152 
TIIK CONDOR 
Vol. XIV 
iiacz’iiis, Hylociclila guttata scqiioiciisis and Plaiicsticiis uiigratorius. This makes 
a Colorado list of 403 species about which there cannot be much ciuestion. 
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 — Mclcagris gallopavo 
silvcstris. PhalacnoptUus nuttaUi nitidus, Mitsck'ora forficata, Otocoris aipcstris 
cntliviiiia, Lo.via ciirairostra stricklaitdi, Jiiiico hyciiialis auncctcns, Protonotaria 
citrca. 
'File 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, 
liecause, although seen several times in summer, there is no definite record 
of its nesting. 
Strix 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 probabl}^ 
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 
ai^iilies 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 xi, 1909, 112). In a recent letter Hersey says: 
"On two different years 1 have found nest and eggs of the Lesser Scaup 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 adult 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 Fleron 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 cam pest ris 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 
e.xtinct in the .state. 
Astur atricapillus striatulus. Sclater gives Astiir atricapillus as a “rather 
uncommon winter bird in Colorado," and says that it breeds “south perhaps to 
Idaho." While it is true that there is no s])ecific record of a nest of a goshawk 
found in Colorado, yet the bird has been noted in summer in the state by several 
comi)etent observers — among which records may be mentioned Lone Cone, near 
Coventry, July 27. 1907 (C. H. Smith) ; not rare July 6-17, 190.L in Middle Park 
