42 
BIRDS OF COLORADO. 
sive as those of Mr. C. B. Aiken, but his notes being published a 
few months earlier, makes his records antedate those of Mr. 
Aiken, though really taken somewhat later. Mr. Allen’s list adds 
84 species to Colorado birds as follows : anas strepera, tringa minu- 
tilla.totanus melanoleucus^totanus flavipes^totanus solitarius^ bartramia 
longicauda^ actitis inacularia, (Egialitis vocifera^ cegialitis montana, bon- 
asa umbellus umbelloides, pedioccBtes phasianellus campestris^ cathartes 
aura.aquila chrysdHos, halicEetus leucocephalus.falcoperegrinus anatum^ 
ceryle alcyon, picoides americanus dorsalis, sphyrapicus varius nuchalis^ 
sphyrapiciis thyroides, melanerpes erythrocephalus, 7 ndanerpes torqua- 
tus, colaptes cafer, phalcenoptilns nuttalli, d'eronautes melafioleucus, 
selasphorus platycercus, tyrannus tyranmis, sayornis saya, contopus 
borealis, contopus richardsoni, empidonax wrightii, cyanocitta stelleri 
7 nacrolopha, aphelocoma woodhousei, niicifraga columbianus , moloth- 
rus ater, agelaius phoeniceus, sturnella magna neglecta, ictei'us spurius^ 
icterus galbula, icterus biillocki, scolecophagus cyanocephalus, carpod- 
acus cassini, leucosticte australis, spmus tristis, spinus pinus, pooccEtes 
gramineus confinis, ammodramus sandwichensis alaudinus, chondestes 
grammacus strigatus, zonoti'ichia leucophrys, spizella socialis arizonce, 
junco camceps, inelospiza fasciata montana, melospiza lincolni, pipilo 
inacidatus megalonyx, oreospiza chlorura, zamelodia melanocephala, 
spiza americana, cala^nospiza inelanocorys, piranga ludoviciana, chel- 
idon erythrogastra, tachycineta bicolor, tacliycineta thalassina, lanius 
ludoviciayius excubitorides, vireo olivaceus, vireo gilvus, vireo solitar- 
ius plmitbeus, dendroica cestiva, dendroica audiiboni, geothlypis mac- 
gillivrayi, icteria virens longicauda, sylvania pusUla, setophaga ruti- 
cilla, anthus pensilvanicus, cinclus mexicanus, galeoscoptes carolinen- 
sis, harporhynchus ntfus, catherpes ^nexicanus conspersiis, sitta 
carolinensis aculeata, sitta pygmcea, parus gambeli, regulus calend'da, 
myadestes iownsendii, turdus fuscescens salicicolus, turdus aonalaschkce 
audiiboni, stalia mexicana bairdi. 
1872. Aiken. Proc. Post. Soc. Nat. Hist. XV. 1872, pp. 
iqj-210. For several years, previous to 1872, Mr. C. E. Aiken 
had been living in Colorado and studying its bird life. His 
observations were from time to time communicated to Prof. 
Brewer and Mr. Ridgway. They constitute the largest mass of 
material on Colorado ornithology collected by any one person. 
Mr. Aiken’s notes, published by Prof. Brewer in 1872, constitute 
the first records of the movements of the birds in Colorado in 
winter, and these winter species form, with the water birds, a 
large part of the 59 species that this list contains in addition to 
those already given by Mr. Allen. The following are the 
additions: hydrochetidon riigra surinamensis , anas boschas, anas 
americana, anas carolmensis, anas cyanoptera, spatiUa clypeata, dafila 
acuta, aix sponsa, ay thy a vallis?ieria, ay thy a affinis, ay thy a collar is, 
clangida clangida a^nericana, charitonetta albeola, erismatura jamai- 
censis, branta canadensis hutchinsii, botaurus le^itiginosus, ardea hero- 
