309 



of Nidification of some of the Birds of Chili," as fol- 

 lows : — 



1. Pontoa'etus melanoleucus, vulg. Aguila, builds a nest some- 

 times on the top of an old tree at the foot of a steep rock, but 

 more frequently upon the most inaccessible part of the rock itself. 

 It lays two eggs, generally in September and October. It does 

 not defend its nest. 



2. Polyhorus tharus, vulg. Traro, builds its nest on the 

 top of large trees in plains and wooded ravines. The time 

 of laying extends from July to November. It lays two or 

 three eggs. 



. 3. Milvago chimango^ vulg. Tinque, conceals its nest among the 

 branches of trees of medium size. It prefers damp places, and 

 lays from two to four eggs. The time of laying is from October 

 to November. 



4. Buteo erythronotus, vulg. Aguilucho, lays two eggs. It places 

 its nest in the cavity of a rock or on the top of a gigantic tree. 

 It builds in October and November, and seems to prefer ravines 

 which border upon the sea. 



5. Graxirex unicinctus, vulg. Peuco, lays two or three eggs. It 

 conceals its nest in the top of bushy trees. The time of the 

 laying extends from September to March. 



6. Falco sparverius, vulg. Cernicalo^ lays in October or No- 

 vember four or five eggs, which it conceals in hollow trees. I 

 have never found one of their nests built in the branches. 



7. Glaucidium nanum, vulg. Chuncho, lays two eggs in the 

 hollows of trees. The time of laying extends from September 

 into November. 



8. Strix perlata, vulg. Lechuza, lays sometime during No- 

 vember from three to five eggs in a hollow tree, or in the cavities 

 of the cliffs which border most of the rivers of Chili. 



9. Stenopsis parvulus, vulg. Gallina ciega, lays in November 

 two eggs, which it deposits on the ground, without any trace of a 

 nest ; it chooses solitary and waste places covered with scanty 

 vegetation. 



10. Cypselus leucopygius, vulg. Golondrina, lays from Septem- 

 ber into December three or four eggs, in a nest poorly con- 

 structed, consisting almost entirely of a heap of feathers, which 



