GATJ.I— TETRAONID.E 325 



Lyrurus. 



Sexes different; toes bare; tail of c^ deeply forked and 

 side feathers curved, of 9 slightly forked ; frequent more 

 wooded districts. 



Lyrurus tetrix tetrix (L.). S Blackcock, ? Grey 

 Hen. Fr. Coq ct poule de bruycre ; Ger. IJirkhuhn ; IfaL 

 Fagiano di monte ; Swed. Orre. 



$ Glossy blue black ; secondaries white on basal part and 

 tips ; abdomen black, under tail coverts white, head and back 

 violet tinged ; outer tail feathers curved outwards. Comb red. 

 Bill black. Toes dark brown. Wing 240-270. Tarsus 45-50. 

 Bill 17-21. $ Dark brown, barred with chestnut, tips and bases 

 of secondaries and of some wing coverts white ; beneath greyer 

 on breast. Wing 215-227. Tarsus 41-45. Bill 14-17. 



Resident. — Scandinavia north to about 69°, Russia (except 

 S.E. Steppes), Jutland and Bornholm, Holland, Ijelgium, 

 Germany, Poland, French Mountains, Alps, Pyrenees, Carpathians, 

 and locally Montenegro, Piosnia, Rumania ; also in N. Siberia. 



L. tetrix britannicus Wither])y and Lonnberg. ^ not 

 distinguishable from typical ^. ^ more reddish brown than 

 9 "tetrix," without white on wing coverts, and with much less 

 grey on breast. 



Resident. — Great Britain ; rare in S. England, chiefly found 

 N. England and in Scotland (mamland and Inner Hebrides). 



L. tetrix viridanus Lorenz. ^ More white in wing than in 

 $ "tetrix"; black band being 12-20 m.m. broad as compared 

 with 35-54 m.m. in "tetrix." 9 Generally greyer, and paler 

 rufous than typical 9 • 



Resident. — E. Russian Steppes, Saratov to Orenburg, and in 

 W. Siberia. 



Lyrurus mlokosie-wiczi (Taczanowski). 



Like " tetrix " but in ^ blue gloss has a greener tinge ; no 

 white on wings, under tail coverts black ; outer tail feathers 

 curving outwards and downwards. Bill black. Toes grey 

 brown. Wing 196-21 1. Tarsus 50-55. 9 Brown, freckled, not 

 barred, with chestnut. Wing 195-200 (H.). 



Resident. — Caucasus Mountains, from 5000 to 9000 feet. 



