Impressions of the Voices of Tropical Birds 



163 



THE NOON-WHISTLE {Chamaza turdina) 



any variation in the song except, when the bird is near the limit of its curiosity, 

 the last note sometimes drops off in a throaty slur, instead of rising a tone: 

 A, F, E. 



On the west slope of the Eastern Andes we found another species, G. 

 hypoleuca, whose song, though readily recognizable as a Grallaria was radi- 

 cally different in form. One longish note on B; a rest; then about five ascend- 

 ing notes a scant semitone apart, and four to the second. This bore a strik- 

 ing resemblance to the first half of Chamceza brevicauda's song heard on 

 the eastern slope of the Eastern Andes at Buena Vista, and is almost identical 

 with that of Grallaria rufula from the highest timbered ridges of this chain, 

 except that here the pause is omitted and the song is higher, beginning on E. 



Little Grallaria modesta from the eastern foot of the Andes at Villavicencio, 



