HAZCL GROUS. 
273 
their inner webs, towards the tip, varied witli red- 
dish : the feathers at the base of the upper man- 
dible black : on each side of the nostrils a small 
white spot 5 between the beak and eye another, 
and a third behind each eye : the chin and throat 
are black, surrounded by white : the feathers of 
the fore-part of the neck are rufous, striped trans- 
versely with dusky, and tipped with white : belly 
and thighs ash-coloured, varied with black cres- 
cents : the vent pale grey : the tail is composed of 
sixteen feathers ; the two middle ones similar to 
the back ; all the others varied with brown and 
greyish white, and marked with a broad bar of 
black towards their tip, which is grey -white ; the 
claws, the naked part of the tarsi, and the feet, are 
brown. 
The female differs in wanting the black chin 
and throat, and in having the naked carunculated 
space about the eyes smaller, and more dull in 
colour. The young of both sexes on the approach 
of winter exactly appear like the female ; previous 
to that period they have the body varied with 
rufous and black : the rump whitisli, barred with 
black : the quills tipped with white : the breast 
pale cinereous : the tail black, with transverse 
rufous spots : the beak and legs black : the eye- 
brows very pale red. 
Tetrao canus of Sparrman, the Ilelsingian Grous 
of Latham, appears to be only a variety of this 
species : it has the entire plumage of a hoary- 
white, obscurely undulated with brown : the wing- 
coverts brownish, marked with a whitish spot at 
V. XI. p. II. 1 9 
