FAMILY FRINGILLIDAE 



545 



and hoo-ee, weeoo-wihoo-weyoo are two renditions (Eisenmann, 

 Smiths. Misc. Coll., vol. 117, no. 5, 1952, p. 57). Once when I heard 

 it at Mandinga, San Bias, the intonation and length were so strongly 

 suggestive of Cyclaris that I had no idea of the true identity of the bird 

 until it was in my hand. The call of this species is a metallic chip. 

 These birds forage in the middle and upper level of the trees; some- 

 times they join groups of birds, but otherwise are found singly or in 

 pairs. Chapman (My Tropical Air Castle, 1929, p. 55) saw them 

 feeding on berries of mangabe (Didymopanax morototoni) on Barro 

 Colorado Island in the Canal Zone. A female I collected on February 

 24, 1952, at El Uracillo, Code, was about to lay, and a pair I took at 

 Cerro Azul, Panama, on April 19, 1949, were near breeding. Ridgely 

 (in litt.) saw a pair feeding a recently fledged young bird near Pucro, 

 Darien, on March 6, 1981. A female taken by Strauch (Bull. Brit. 

 Orn. Club, 1977, p. 65) in May was breeding, but I have no other in- 

 formation on nesting behavior. Two collected by Strauch weighed 

 43.5 and 50.4 g. 



Figure 44. — Slate-colored Grosbeak, Piquigrueso Apizarrado, Pitylus grossus 



saturatus, male. 



