A8 Mearns, Arizona Mountain Birds. [January 



barely reach the pine forests and are much more characteristic of 

 the lower mesas and valleys are excluded,* although not a few 

 of them breed occasionally among the oaks and pines at the lower 

 border of this territory. These, together with the winter visitors 

 and migrants passing through during spring and fall, would per- 

 haps treble the number of species here given. 



The summer residents of the mountain forests of northeastern 

 Arizona comprise two mai-ked classes ; one representing a south- 

 ern extension of the avifauna of the Rocky Mountains ; the other a 

 northern extension of the avifauna of the mountains of northern 

 Mexico, along the Mogollon range. Those not included in either 

 of these classes are mainly inhabitants of the surrounding regions, 

 whose distribution is general. A few species, like the Californian 

 Woodpecker {Afelanerpes formicivorus bairdi), extend their 

 habitat to this region from the west ; while others, such as the 

 Massena Partridge (Cyrtonyx montezumce), reach it from the 

 east or southeast ; and a few appear to be mainly or wholly con- 

 fined to this particular region during their season of reproduction, 

 among them the Red-backed Junco (Jicnco cinereus dorsalis). 



The following species are common to the Rocky Mountain 

 region : — 



Colymbus nigricollis californicus, Merganser americauus, 

 Anas boschas, Anas strepera, Anas americana, Anas discors, 

 Spatula clypcata, Dafila acuta, Erismatura rubida, Porzana 

 Carolina, Dcndragapus obscurtts, Aquila chrysaetos, Haliaietus 

 leucocephalus, Nyctale acadica, Btibo virginianus stibarcticus, 

 Glaucidium gnoma, Dryobates villosus hyloscopus, Dryobatcs 

 pubescens oreoecus, Picoides amcricanus dorsalis, Sphyrapi- 

 cus thyroideus, Alelanerpes torquatus, Colaptes cafer, Chor- 

 dcilcs virginianus henryi, TrocJulus platycercus, Contopus 



*To be included in this category are the following species, all of which breed, at 

 least occasionally, in the lower edge of the pine belt : — 



Ardea virescens, Callipepla gambeli, Urubitinga anthracina, Pandion haliaetus car- 

 olinensis, Geococcyx calif ornianus, Dryobates scalaris bairdi, Trochilus rnftis, Sayornis 

 saya, Aphelocoma woodhousei, A. sieberii arizonce, Carpodacus mexicanus frontalis, 

 Spizella atrigularis, Peuccea ruficeps boucardi, Pipilo maculates megalonyx, Petroche- 

 lidon lunifrons, Stelgidopteryx scrripennis, Lanius ludovicianus exciibitorides, Helmin- 

 thophila lucice, Dendroica ojstiva sonorana, Dendroica nigrescens, Geothlypis macgilli- 

 vrayi, < Geothlypis trie lias occidentatis, Icteria virens longicaitda, Sylvania pusilla pileolata , 

 Mimus polyglottos, Catherpes mexicanus punctulatus, Tktyothorus bewickii bairdi, Parus 

 inornatus griseus, Parus wotlweberi, Psaltriparus plumbeus, Polioptila carulea. 



