k wer mandible whitish, tipped with black; eye dark brown, eyelids 
petetigia® lessnatdttoecionter side of leg and two outer toes dark brown or black, inner 
side of leg, inner toe and webs light brown spotted with black. 
Adult female.--A very small, brownish black diving duck with @ striped head and 
long tail: crown, stripe through eye and one across cheek forming three somewhat parallel 
bands separated by areas of cream or buff; neck, upper breast and back dark brown, 
feathers edged with buff, or buffy white, lower back, scapulars and rump brownish black, 
feathers tipped with buff; tail brownish black; breast whitish, belly grayer; wings dark 
brown with white speculum smaller than in male. 
Hes tur omen es  O Penale (3) 
Ne a setine (140.1) Wing, 135-137 (136) 
Tail, 72-85 (79.6) , Tail, 72-78.5 (74.2) 
Tarsus, 26,5=28.5 (27.8) 
Tarsus, 26.8-28.3 (27.6) 
Culmen, 32-34.5 (32.9) 
---Greater Antilles and South America to Chile (Concepeidn), northern 
General Distributi 
Argentina (Tucuman) and eastern Argentina (Buenos Aires Province). Occasional in México, 
Central America and the Lesser Antilles. 
Distribution in Guatemala.—-The occurrence of this species is based on a single specimen, 
with no locality listed. 
Culmen, 31-33.5 (32.5) 
Records.~-This species was not observed during this survey. 
In literature there is only one record, that of an old "trade-skin" labeled 
Guatemala, which lacks the data as to specific locality. 
bits and Hunting.--Because of the rarity of this: species in the Republic, no further 
information is included, Available notes all pertain to ite occurrence and habits in other 
countries, chiefly in South America, 
19. Oxyura jamaicensis rubida (Wilson) 
Ruddy Duck 

Other Names. — 
Guatemalan: pato bola. In México called pato sonso and pato tepalcate, 
English: butterball, spiketail 
Statug.--The ruddy duck is apparently a regular winter visitant, though very few in numbers. 
Description.--A emall, chunky duck; male with erect, fan-like tail, dark back and crown, 
white cheeks; female of similar build but tail not carried erect, cheeks lighter than crown 
but not white. 
Adult male.--Winter plumage: crown and nape blackish brown: cheek and chin white: 
back and rump dark brown, faintly barred with gray; tail blackish brown, feathers stiff, 
narrow and pointed; throat and neck grayish brown; underparts whitish, marked with many 
fine, broken bars of grayisk or brownish; legs and feet dark bluish gray, iris reddish-brown. 
Adult female.--Winter plumage: similar to that of male but smaller and with ; 
crown dark brown, barred with reddish brown; cheeks pale gray with a dark stripe from 
eet of bill to back of cheek, paralleling the border of the crown; bill duskier than in 
Oe 
Measurements. -- 
Length, 342,9-431.8 
Wingepread, 508. 0-609.6 
Wing, 139. 7~154.9 
Tail, 61.0-68,6 
Tarsus, 27.9-38.1 
Culmen, 35.6-43.2 
Male (8), 1 1b. 3 oz. to 1 1b. 12 oe; av. 11D. 5-1/2 oz. 
Female (13), 11 oz. to 1 1b. 7 oz.: av. 11d. 2 OZe 
34 
