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CoMPARISON or CHARACTERS IN DirFERENT PLUMAGE StacEs oF THREE WesTeRN Nort AMERICAN SuBspecres Or LAGopus LAGOPUS

alascensis albus alexandrae
Northern Alaska Northern British Columbia Southeastern Alaska

Large-billed Small-billed Small-billed
Adult male, spring (May and  Paler; more ruddy dorsally Generally darker colored Generally darker colored.
June).
Adult male, winter, preliminary... More ruddy dorsally; lighter ‘More gray dorsally; lighter Darker, more uniformly brown
brown on throat and chest. brown on throat and chest. dorsally. Dark vinous on
throat and chest.
Adult female, spring Dark markings restricted; bright Dark colored; browns dullerand Brown areas extensive and richly
hazel. black areas larger; feather colored; no gray dorsally.
edgings dorsally gray rather
than brown.
Adult female, winter, preliminary... Paler colored; bright ruddy. .. Darker; much gray on dorsum; Much darker; no gray on dorsum;
chestnut areas darker. more uniformly brown (vinous).
Male and female, first winter, | Paler brown Paler brown; much gray on Darker; almost uniformly brown
preliminary. dorsum. (vinous) above.
Male and female, juvenal Less ruddy, more grayish Dark brown.

Measurements IN Minuimerers (AveRAGE, Minimum AND Maximum) or Turee Norra American Susspecies or LAGoPUS LAGOPUS
Wing Tail Culmen Depth of bill Width of bill

Lagopus |. unga- Fort Chimo, July 14, 1884 194.4 (191.0-198.0*) 120.8 (119.0-124.0*) 20.0 (19.0-20.5) 14.2 (13.0-14.8) 13.3 (13.0-13.5)
vus, 5 adult Ungava.
males.

Lagopus |. alas- Northern 199.4 (192.0-207.0) 124.3 (115.0-133.0) 17.1 (16.5-17.5) 11.9 (11.2-12.5) 12.4 (11.0-13.5)
censis, 10adult Alaska.
males.

Lagopus |. albus, Atlin, British Sept. 1, 1924 188.3 (182.0-193.0) 122.3 (118.0-129.0) 15.6 (15.0-17.5) 10.3 (10.0-11.0) 11.4 (11.0-12.0)
10 adult males. | Columbia.

* Very worn plumage.