42 BIRDS OF COLORADO. 



sive as those of Mr. C. E. 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, totanusflavipes, totanus solitarius, bartramia 

 longicauda, actitis viacularia, cegialiiis vocifera, agialitis montana, bon- 

 asa umbellus umbelloides, pediocates phasianellus campestris, cathartes 

 aura,aquilachrysdetos,hali(zetus leucocephalus,falco peregrinus anatum, 

 ceryle alcyon, picoides americanus dorsalis, sphyrapicus varius nuchalis^ 

 sphyrapicus thyroides, melanerpes erythrocephalus, melanerpes torqua- 

 tus, colaptes cafer, phalcenoptilus nuttalli, deronautes melanoleucus^ 

 selasphorus platycercus , tyrannus tyrannus, sayornis saya, contopus 

 borealis, contopus richardsoni, empidonax wrightii, cyanocitta stelleri 

 macrolopha, aphelocoma woodhousei, nucifraga columbianus, moloth^ 

 rus ater, agelaius phwniceus, sturnella magna neglecta, icterus spurius, 

 icterus galbula, icterus bullocki, scolecophagus cyanocephalus, carpod-' 

 acus cassini, leucosticte australis, spinus tristis, spinus pinus, poocaetes 

 gramineus confinis, ammodramus sandwichensis alaudinus, chondestes 

 grammacus strigatus, zonotrichia leucophrys, spisella socialis arizoncB, 

 junco caniceps, inelospisa fasciata montana, melospiza lincolni, pipilo 

 maculatus megalonyx, oreospiza chlorura, zamelodia melanocephala, 

 spiza americana, calamospiza melanocorys, piranga ludoviciana, chel- 

 idon erythrogastra. tachycineta bicolor, tachycineta thalassina, lanius 

 ludovicianus excubitorides, vireo olivaceus, vireo gilvus, vireo solitar- 

 ius plumbeus, dendroica cestiva, dendroica auduboni, geothlypis m.ac- 

 gillivrayi, icteria virens longicauda, sylvania pusilla, setophaga ruti- 

 cilla, anthus pensilvanicus, cinclus mexicanus, galeoscoptes carolinen- 

 sis, harporhynchus rufus, catherpes mexicanus conspersus, sitta 

 carolinensis aculeata, sitta pygmcea, parus gambeli, regulus calendula, 

 myadestes townsendii, turdus fuscescens salicicolus, turdus aonalaschka 

 auduboni, sialia mexicana bairdi. 



1872. Aiken. Proc. Bost. Sac. Nat. Hist. XV. 1872, pp. 

 193-210. 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 nigra surinamensis, anas boschas, anas 

 americana, anas carolinensis, anas cyanoptera, spatula clypeata, dafila 

 acuta, aix sponsa, aythya vallisneria, ay thy a affinis, ay thy a collaris, 

 clangula clanguln americana, charitonetta albeola, erismatura jamai- 

 censis, branta canadensis hutchinsii, botaurus lentiginosus, ardea hero- 



