TROGLODYTES HORNENSIS 41 



Ois., p. 74, 1891 ; Oates and Reid, Cat. Birds' Eggs Brit. Mus., iv, p. 74, 

 1905. 

 Troglodytes magellaniCUS, Gould and Darwin, Voij. ^^ Beagle,' 

 Birds, p. 74, 1841. 



Habitat. — Tlie Argentine Republic and Chili, to Tierra del Fuego. 



(^, San Sebastian Settlement, 29th Sept.; <?, c?? 30th Sept.; ? , Sara 

 Settlement, 13th Oct. ; ^ , San Sebastian Settlement, 23rd Oct. ; three eggs, 

 Rio McClelland Settlement, 12th Dec, 1904. 



Iris — brown ; bill and legs — drab. 



The Cape Horn Wren is determined by Dr. Sharpe as a pale 

 isabelline race of T. musculus^ which includes T.furvus, having 

 the tail more rufescent with pale-brown bars, and the under 

 surface of a light vinous isabelline, deepening into tawny buff 

 on the flanks and under tail- coverts. The under tail-coverts 

 are generally uniform, but not always so, and some have distinct 

 white tips with subterminal spot-like bars. 



The series in the British Museum shows considerable varia- 

 tion in size and markings. 



My Tierra del Fuego birds are throughout uniform : even 

 between the sexes, there is no outward difference. On the 

 average, the series measures : — 



Length 4*7; culmen 0*6; wing 2*15 ; tarsus 0"7; tail 1*95 

 inches. 



I had difiiculty in securing a female : of six examples shot 

 and preserved by me, five were males. 



This Wren is one of the commonest birds in the scrubby 

 bush composed of Chiliotinchum amelloideum and the black 

 currant in the Sierra Carmen Sylva, also on the outskirts 

 of dense forest. It does not occur in open grass-land. In its 

 behaviour towards man it is curious and impudent. If one 

 sits down to rest or stops to do anything, it appears on the 

 scene, creeping on one through the undergrowth, hopping round, 

 hanging head downwards, and uttering its petulant " C/iz-z-2 " 

 in protest against intrusion. At such times, though deprecating 



^ 



