2!>S 



NORTH AMKItlCAX IlIItDS. 



Ill colors, liowevcr, they dillcr ciitiivly ; tlio I', infmixtits linviiij,' tliu licad 

 (linker tliaii tlio liody, mid iiiiironn (instciid of tliu coiitniryj, and in liuviiig 

 tlui lower priiiiiiry ami lower leatliei'.s ol' tin,, m renter coverts, as well as the 

 f;reater part of llie tail, l)ri;jlit rufous. 



A. Dusky imclial lioml i-facliiiif; torwiinl to, or in (lont of, (ho eyes; iiliim- 

 beous-lilack. 



norml fentlirrs with white shnfl.i in old mid i/oiiiii/. Tuil-Jealli^rs not 

 dintinctli/ jiiiler iil nidx. 

 1. Wliitc I'nint.'il patoh narrower tlmii Icii-ili ol' tlir liill ; Mendiiifr jTradiinlly 

 witli llic Maikish of thi' crown. I'ppcr | irt.s uiiil)ur-l)rowiiisli. Wilier, 5.50; 

 tail, n.-lU; liill, .!)() and .;i(l. Young. Entirely pliiiulwoiis-lirowii, iuatluMs of 

 lioad al.ovo liordcri'd with jmlcr. Ik'iifatli ])ak-r, wliilisii l.rowii. Huh. 

 Ori'fjoi), \Va!iliinf.'ioirJVril(iry, liriiisii ('oliiinl)ia, do. . . var. oh.icttrus. 



Dnrsid feitllin-K iri/lioii/ irliilc shifts in old or j/nniif/. Tail-fciithers 

 brondlji li/i/icd with dull icliili'. 



2. While (ront.al p.iti.h iinicli hrondcr than Iciifrlh of hill ; ahriiptly defined, 

 with a eonvex oiilline lieh.ud, ai.'-aiiisl the ihisky ol' the oeeiimt. I'pper 

 parts pliiiiibeou.s, with a slight l)rownisli cast. Winjr, 5.25 ; tail, 5.80; bill, 

 .05 and ..■35. Young. Entircjjy uniforni dark jiluinlieoiis. Ilah. Canada, 

 Maine, and Labrador to tlio Yukon vm: ni n a d e n sis . 



B. Dusky nneh.il hood not reaehinir to tlie eyes, tint confined to tiie nape; 

 bIuish-pliunl)cous. 



3. Wl]it(! frontal patch covering whole crown, melting gradually into the 

 ashy of the nape; upper jiarts l)luish-a.shy. "Wing, 0.00; tail, 0.00; bill, 1.00 

 anil.;il. Young, liluish-plunibcoiis, inclining to a.shy-wliite on the crown 



and cheek,«. //«?;. Rocky Mountains of Fnited States . . \a.\: capital is . 



In the more slender form, loiiyor and narrower bill, and paler tints 



with a predomiimnco of 

 the light colors, of the 

 var. cft2)itrt/is, compared 

 with the ty])ical, or 

 standard, var. rrtnndcn- 

 ■s/.s', we see the pccu- 

 £_^ liar imi)ression of the 

 middle rej.;ioii ; while 

 in the var. ohscitms, the 

 more dusky tints, and 

 predominance of dark- 

 er colons, the inthience 

 of the ■well-known law 



Peri.snrfits rana'fensis. 



affecting colors in birds of the northwest coast region is seen 



