transcribed as "Kew" or "Kioo". They sound very much like the most common notes 

 in the Dawn Calling of Crimson-hacked Tanagers (which are abundant in many 6f the 

 same areas as Streaked Saltators) . It is, in fact, sometimes impossible to tell 

 which species is uttering the notes when the performing individual is mot in 

 sight # Most of the "Kew" or "Kioo" Notes uttered by Streaked Saltators are very 

 uniform in pitch. Sometimes, however, single notes which are very much higher 

 in pitch but otherwise similar to ordinary "Kew"s are interjected in the series 

 at irregular intervals. All or most Dawn Calling performances also include 



single brief Battles, or f, Kew H Notes with a pronounced rattling "undertone" , as 



* •>» *• 



well as the clear notes. These rattling notes may be uttered in regular altern- 



• in 

 ation with typical "Kew" or "Kioo" Notes, or interjected less frequently and 



apparently at random. These performances are reminiscent of the Dawn Calling 



performances of Crimson-backed Tanagers in which single guttural or semi-rattling 



"Kraa" or "Kraanh" Notes are interjected among typical ,f Kew lf s. It seems very 



likely that the Dawn Calling of Streaked Saltators , or at least their "Kew" or 



"Kioo" Notes, are also similar to the corresponding patterns of related species 



in being produced by (thwarted) sexual motivation and functioning as a signal 



to attract or summon mates or potential mates. 



The dawn "song" of Streaked Saltators in Costa Rica which Skutch transcribes 

 as "chip rrr chup chup chip rrr. .." is probably Dawn Calling like that of the 

 Panamanian birds. 



Sisenmann transcribes what seems to be Dawn Calling by Streaked Saltators 

 on Barro Colorado Island as "chee-oo, chee-oo, che®-oo, cheeeee-oo" etc. 



The most characteristic vocalizations of s treaked Saltators in central 



Panama are Day Songs. These are series of extremely varied notes. The series 



are always brief, ji.e,. more or less determinate in length. A typical "complete" 



Day Song begins with two or three short and rather "colorless" notes, each of 



which might be transcribed by something like "Duh" . When three of these notes 



are uttered, the interval between the first and second notes usually is longer 



than the interval between the second and third notes. The first note often is 



