6o 



BIRDS OF THE REPUBLIC OF PANAMA PART 3 



gray, slightly paler at the tip ; tarsus yellowish brown, the yellowish 

 shade more prominent on the posterior area ; toes dull brownish gray. 



Measurements. — Males (16 from Chiriqui, Veraguas, Los Santos, 

 Herrera, and Province of Panama), wing 52.0-54.8 (53.5), tail 

 68.1-76.5 (72.5), culmen from base 11.2-13.5 (12.7), tarsus 18.2- 

 19.2 (18.6) mm. 



Females (10 from Chiriqui, Veraguas, Herrera, and Province of 



Figure 6. — Pale -breasted spinetail, canastero pechiblanco, Synallaxis albescens 



latitabtmda. 



Panama), wing 50.9-53.7 (52.3), tail 65.7-73.1 (70.0, average of 9), 

 culmen from base 12.3-13.4 (12.7), tarsus 18.0-20.0 (19.0) mm. 



Resident. Fairly common locally on the Pacific slope from western 

 Chiriqui to the lower Rio Bayano in eastern Province of Panama ; to 

 1250 meters elevation near El Volcan, Chiriqui. 



These are birds of open lands, found on savannas and at the 

 borders of swamps and marshes, where there is low growth of spiny, 

 fine-leaved shrubs, or heavy stands of coarse grasses. As they are 

 shy their presence is known usually from their low, complaining calls, 

 or their brief appearance in the branches of the low thorn shrubs 



