Carriker : List of the Birds of Costa Rica. 453 



The only record for the taking of this rare hawk in Costa Rica is 

 that published by Mr. Ridgway (Talamanca [Gabb]). This bird was 

 evidently taken in the vicinity of Sipurio, for Professor Gabb did most 

 of his work there. Nothing is known of its habits or Central Ameri- 

 can range, beyond the fact that this one specimen was taken in 

 Talamanca and two are recorded from Panama. It is evidently only 

 a rare straggler in this region and does not properly belong to the 

 avifauna of Costa Rica. 



129. Micrastur interstes Bangs. 



Micrastur guerilla Sharpe, Cat. Birds Brit. Mus., I, 1874, 79. part. — Ridg- 

 way, Proc. Acad. Nat. Sci. Phila., 1875, 488, part (C. R. [Frantzius and 

 Gabb]). — Zeledon, An. Mus. Nac. de C. R., I, 1887, 126 (Monte 

 Redondo). — Cherrie, Expl. Zool. en C. R., 1891-2, 1893, 50 (Boruca). — 

 Salvin and Godman, Biol. Centr.-Am., Aves, III, 1901, no, part (Estrella, 

 Jimenez, Irazu, Talamanca, Pozo del Pital, Carrillo [Underwood]). 



Micrastur interstes Bangs, Auk, XXIV, 1907, 289 (La Estrella de Cartago and 

 El Pozo de Terraba [Underwood]). 



Bangs Collection : Tenorio (Underwood). 



C. H. Lankester Collection : Tuis. 



Carnegie Museum : Pozo Azul de Pirris, Carrillo, Buenos Aires 



(Carriker). Three skins. 



Like its larger relative, this handsome little hawk is well distributed 

 over the whole of the country, up to at least 5,000 feet. It is more 

 abundant in the lowlands of the Pacific than in any other portion of 

 Costa Rica, and like all the genus it is strictly an inhabitant of forests, 

 keeping near the ground in the low trees, vines, and shrubbery. Its 

 food consists largely of small birds. As a rule it is quite fearless, and 

 is much easier to approach than most woodland birds. I once watched 

 one of these hawks make an attack on a small covey of partridges 

 {Odontophorus melanoleuctis) . The partridges fled in every direction 

 in the utmost confusion, and while the hawk did not succeed in 

 killing his quarry he at least relieved the bird of a large portion of its 

 feathers. I was so interested in the outcome of the battle that both 

 hawk and partridges made their escape. 



130. Geranospizias niger (Du Bus). 



Ischnosceles niger Du Bus, Bull. Ac. Brux., XIV, 1847, p. 102 1. 



Geranospizias niger Sharpe, Cat. Birds Brit. Mus., I, 1874, 82 (Central America). 

 — Zeledon, An. Mus. Nac. de C. R., I, 1887, 127 (Pozo Azul de Pirris). — 

 Salvin and Godman, Biol. Centr.-Am., Aves, III, 1899, 52 (Zeledon's 

 references). — Bangs, Auk, XXIV, 1907, 290 (El Pozo de Terraba [Under- 

 wood] ). 



