334 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



coloration found in the extensive series of specimens available 

 throughout the vast area of its occurrence is unusual. 



Eugene Eisenmann. in an area of thickets at Playa Coronado, in 

 mid-May found males in display, with the throat puffed and the 

 wings shivering and hanging below the tail, while they uttered their 

 musical calls, interspersed with nasal, growling sounds. At times two 

 males rested near one another on the same branch, calling steadily. 

 Other pairs of males in alternation leaped a few centimeters in the 

 air usually landing on the same perch. 



Hallinan (Auk. 1924, p. 319) described a nest found September 13, 

 1907, on Sosa Hill, Canal Zone, in a low bush nearly a meter from the 

 ground, as shallow, made of "fine dried twigs and dried leaves hung 

 loosely on the sides and bottom." The two eggs were brownish 

 white, with spots of reddish brown mainly in a ring around the 

 larger end. Measurements (transposed from inches) were 21.8 X 

 15.7 and 21.8 X 15.2 mm. Another nest from Panama Viejo, August 

 11, 1907, was shallow of "fibrous grass bound with spider webs." 

 The two eggs were identical in color, marking, and size to those 

 described above. 



MANACUS VITELLINUS (Gould): Golden-collared Manakin, 



Doctorcito 



Figure 32 



Small ; male with crown, wings, and tail black, foreneck and upper 

 breast yellow to faintly orange-yellow ; female dull green, paler on 

 lower surface. 



Description. — Length 100-120 mm. Adult male, wing feathers 

 strongly stiffened, outer primaries bowed, tips narrowed ; feathers 

 of throat elongated to form an erectile tuft ; crown, including lores, 

 center of back, scapulars, wings (except anterior lesser coverts) and 

 tail black ; hindneck, upper back, sides of head, neck, and upper breast 

 bright orange-yellow ; rump and upper tail coverts olive-green ; lesser 

 wing coverts mixed yellow and black ; lower breast, sides, and under 

 tail coverts pale olive-green ; abdomen yellowish ; axillars and under 

 wing coverts pale yellow ; edge of wing dusky-olive. 



Adult female, upper surface olive-green ; lower surface paler, 

 olive-yellow on breast and abdomen. 



Immature male, like adult female. 



Details of the range of the nominate form vitellinus in Panama 

 are given below. In northwestern Colombia this race continues 

 beyond the Comarca de San Bias into northern Choco near the lower 



