Estancia Espartilla, Argentine Republic. 195 



lives amongst the tallest paja-grass. It is extremely hard 

 to shoot^ as it darts suddenly up and then shoots low down 

 into a neighbouring clump of grass, being thus hidden after 

 its first rise. It does not seem to flock or to migrate. 



5. Anthus correndera, Vieill. 



One of the very commonest birds at all seasons in the open 

 camp. It appears to pair for life, never flocks or migrates, 

 and breeds early and late in the season, bringing up two or 

 three broods a year. 



Its cup-shaped nest is composed of hay, and is lined with 

 horse-hair. It is placed under a tuft of short grass on the 

 ground. The eggs are four iu number. 



6. Parula pitiayumi (Vieill.). 



I have noticed this species occasionally in the autumn, 

 hopping about the aroma-trees in company with Serpophaga 

 subcristata. 



7. Progne chalybea (Gm.). 



This Martin arrives in numbers in August and departs 

 early iu April. They breed under the eaves of sheds, making 

 a mud wall on the outside of the nest, which is composed of 

 straw and lined with a few dry leaves. The nest is placed 

 on a plank or flat surface, with the mud-protection on its 

 outer side. Eggs six in number, white, rather elongated. 

 When the young are fledged they and the parent birds roost 

 in the withered branches of eucalyptus instead of under the 

 eaves. It breeds about the second week of November. 

 The native name is '' Calaudrina." 



8. Progne tapera (Linn.). 



This Martin arrives a little later and departs a few days 

 sooner than P. chalybea, but is found in equal numbers. It 

 breeds invariably in Oven-birds' nests, lining the inside 

 chamber with feathers. The eggs are six in number. 



9. Tachycineta leucorrhoa (Vieill.). 



This little Swallow arrives latest of all the Hirundinidas 

 and departs the soonest. It builds in the disused holes of 

 Geositta cunicularia, making a nest of hay lined with feathers 



o2 



