191 Mr. A. H. Holland on the Birds of the 



this district is about 98° in the shade, whilst in the winter 

 nights the thermometer marks occasionally 4° of frost. 



The specimens have in nearly every case been submitted to 

 Mr. Sclater for identification, and the arrangement and 

 nomenclature of his 'Argentine Ornithology' are followed. 



1. MlMUS MODULATOR (Gould) . 



A''ery common in the montes at all seasons, and has a more 

 powerful song than any other bird with us. It nests early 

 in September, and rears two broods a year. The young 

 accompany the parent birds until the following spring, when 

 they pair for life. I have never seen this Thrush in flocks. 

 The nest is composed of twigs, roots, and grass; it is lined 

 with grass and feathers. Eggs five. The native name is 

 " Calandria." 



2. POLIOPTILA DUMICOLA (VicilL). 



Fairly common all through the year, living almost entirely 

 amongst the bushes and hedges. 



In its movements this bird much resembles a Tit, being 

 ever on the move. It seems to prefer companionship, being 

 seen in small flocks in the winter months. It nests with us, 

 but so far I have been unable to find its breeding-place. It 

 has no song, but twitters occasionally. 



3. Troglodytes furvus (Gm.). 



Very common at all seasons, living especially in gardens 

 near dwellings. In its movements it somewhat resembles the 

 British Wren, but is more careful to conceal itself, although 

 it is very fearless of man. It nests in almost any cavity that 

 is large enough, such as disused Oven-birds' nests, skulls, or 

 holes in walls. The nest is composed of grass, hay, and 

 rootlets, and is lined with horse-hair and feathers. It is 

 cup-shaped, with the foundation very high. The usual 

 number of eggs is five. 



-&o^ 



4. CiSTOTHORUS PL.4.TENSIS (Lath.). 



Very common at all seasons, excepting the autumn, 

 namely from February to May, when it seems to disappear 

 and is only found in the marsh-lands. At all other times it 



