i8 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I49 



Fig. 5. — Postures of adult male yellow-rumped and orange-rumped tanagers. 

 From top to bottom : 



a. Posture of a male yellow-rumped tanager uttering "Tzzheet" — Thin 

 Rattle — Hoarse Flourish calls while alone. With extreme Back-ruffling, some 

 Crown-flattening, and (perhaps) a trace of Belly-fluffing. 



b. Posture of the same individual uttering Thin Rattles, a few seconds later, 

 after being joined by an adult female or a juvenile. 



c. Posture of a male orange-rumped tanager uttering Rattles while facing 

 a female silver-billed tanager. 



