xiv Birds of Colorado 
Histrionicus histrionicus, Colinus virginianus, Calli- 
pepla squamata, Lophortyx californicus (introduced), 
Dendragapus obscurus, Bonasa u. umbelloides, Lagopus 
leucurus, Tympanuchus americanus, Pedioceies p. cam- 
pestris, Centrocercus urophasianus, Meleagris g. merriamt, 
Archibuteo ferrugineus, Aquila chrysaétos, Haliwétus 
leucocephalus, Aluco wpratincola?, <Asio wilsonianus, 
Cryptoglaux acadicus, Otus a. maxwellie, Otus a. aikent 
Otus flammeola, Bubo v. pallescens, Speotyto c. hypogea, 
Glaucidium gnoma, Geococcyx californianus, Dryobates 
v. monticola, Dryobates p. homorus, Dryobates s. bairdi, 
Picoides a. dorsalis, Colaptes c. collaris, Otocoris a. 
leucolema, Pica p. hudsonia, Cyanocitta cristata, Cyano- 
citta s. diademata, Aphelocoma woodhousei, Cractes c. 
capitalis, Corvus c. sinuatus, Corvus cryptoleucus, Corvus 
b. hesperis, Nucifraga columbiana, Cyanocephalus 
cyanocephalus, Hesperiphona v. montana, Pinicola e. 
montana, Carpodacus cassini, Carpodacus m. frontalis, 
Loxia c. minor, L. c. stricklandi ?, Leucosticte australis, 
Spinus pinus, Passer domesticus (introduced), Junco 
aikent ?, Junco caniceps, Pipilo f. mesoleucus , Bomby- 
cilla cedrorum, Cinclus m. unicolor, Catherpes m. 
conspersus, Thryomanes b. bairdi, Telmatodytes  p. 
plesius, Certhia f. montana, Sitta c. nelsoni, Sita 
canadensis, Sita pygmea, Beolophus griseus, Pen- 
thestes a. septentrionalis, Penthestes gambeli, Psaltriparus 
plumbeus, Regulus s. olivaceus, Myiadestes townsendi. 
(B) Summer residents migrating south in winter— 
118, or about 30 per cent. :— 
Colymbus n. californicus, Podilymbus podiceps, Larus 
delawarensis, Sterna forsteri, Hydrochelidon n. surinam- 
ensis, Querquedula discors, @Q. cyanoptera, Spatula 
clypeaia, Aix sponsa, Erismatura jamaicensis, Plegadis 
guarauna, Ixobrychus ewilis, Ardea herodias, Egretta 
