120 PARUS P. ATRICAPILLUS SEPTENTRIONALIS 



Plumage lax, without decided changes with age or season. 

 Size medium. Nest excavated. Eggs spotted. 

 This genus has developed a greater number of species than 



FIG. 20. A typical Parus (P. atricapillus). 



any other of the family, and may be considered in one sense 

 the typical expression of the whole parine group. There are 

 five or six American species, two of which, perfectly distinct 

 from each other, inhabit the Colorado Basin. 



Long-tailed Chickadee 



Parus atricapillus septentrionalis 



ParUS atricapillus, in part, of some authors. Maxim. J. f. O. vi. 1858, 119. 



Parus Septentrionalis, Harris, Pr. Phila. Acad. ii. 1845, 300 (Upper Missouri River). Bd. 

 Stansb. Rep. GSL. 1852, 316 Cass. III. 1853, 17, 80, pi. 14. Ed. SNA. 1858, 389. Scl. 

 Cat. AB. 1861, U.Hayd. Tr. Am. Philos. Soc. xii. 1862, 164. Blak. Ibis, iv. 1862, 5 

 (Saskatchewan). Blak. Ibis, v. 1863, 67 (British America). Bd. Rev. 1864, 19.(l)Hoy, 

 Smiths. Rep. for 1864, 1865, 438 (Missouri). Coop. Am. Nat, 'iii. 1869, 74. Coves, Am. 

 Nat. v. 1871, 369. Stev. U. S. Geol. Surv. Terr, for 1870, 1871, 464. Aiken, Pr. Bost. 

 Soc. xvi. 1872, 195 (Colorado) .Mvrr. U. S. Geol. Surv. Terr, for 1872, 1873, 713. 



Lophophanes septenrionalis, Bd. Stansb. Rep. GSL. 1852, 332. 



ParUS atricapillus var. septentrionalis, Alltn, Bull. MCZ. iii. 1872, ITLCoues, Key. 1&72, 

 81. Allen, Am. Nat. vi. 1872, 396. Ridg. Bull. Ess. lust. v. 1873, 179. Coues, BNW. 

 1874, 21, 230. Allen, Pr. Bost. Soc. xvii. 1874, 49. B. B. Sf R. NAB. i. 1874, 99, pi. 7, f. 

 2. Yarr. & Rensh. Rep. Orn. Specs. 1874, 7.Hensfi. Rep. Orn. Specs. 1874, 41, 72. 

 Allen, Pr. Bost. Soc. xvii. 1874, 49,Nels. Pr. Bost. Soc. xvii. 1875, 339 (Utah). Hensh. 

 Zool. Expl. W. 100 Merid. 1876, 171. 



ParUS Septentrionalis var. albescens, Bd. BNA. 1858, p. xxxvii. Coop. Am. Nat. iii. 1869.299. 



Parus albescens, Coop. Am. Nat. iii. 1869, 74. 



HAB. Region of the Missouri to the Rocky Mountains and south in Alpine 

 districts to New Mexico. 



CH. SP. $ 9 Dor so ochraceo-cinereo^gastrceo ochraceo-albo; alls 

 cauddque fuscis, late albo-limbatis; lateribus capit-is et colli mveis r 

 vertice, nuchd guldque nigris. Caudd alis longiore. 



$ 9 : Dorsal region ashy, with an ochraceous tinge, especially on the rump ;. 

 under parts white, with an ocbraceons tiuge. Wings and tail fuscous, very 



