GRAY-HEADED GUAN 



peared near the laboratory, and sometimes were 

 seen to fly across the small clearing in front of the 

 building. They would make the distance with 

 a few flaps of the -wings at the start, gliding the 

 rest of the way. 



It is quite noisy at times, having several loud 

 and strident calls repeated again and again. One 

 resembling the syllables guenk, guenk, quenk, 

 many times reiterated and given in a resonant 

 metallic tone is perhaps the commonest of them. 



3. Ortalis cinereiceps cinereiceps (Gray) 

 Gray-headed Guan. Chacalaca. "Faisana" 



Sexes alike. Length, about 560 mm. (22.00 

 in.); tail, about 243 mm. (9.60 in.). Top of 



^ FIG. 4. Ortalis c. cinereiceps 



head and nape dark gray ; remaining upper parts 

 grayish brown; tail darker brown and broadly 

 tipped with grayish buff; longer wing quills 

 bright chestnut; chest grayish brown shading to 

 grayish buff on breast and remaining under 

 parts. Bill short, horn color; throat bare, except 

 for a narrow middle line of blackish feathers. 



