NO. 9 BIRDS OF ISLA COIBA, PANAMA—WETMORE 21 
Family ANATIDAE: Ducks 
ANAS DISCORS Linnaeus: Blue-winged Teal, Cerceta 
Anas discors LINNAEUS, Systema naturae, ed. 12, vol. 1, 1766, p. 205. (South 
Carolina.) 
On January 14 I saw a flock of a dozen on the small lagoon back 
of Catival, and I was told that teal came regularly to the Rio San 
Juan in its lower section above the wooded swamps. On January 23, 
as we crossed in a cayuco to the western side of Bahia Damas, a teal 
flew low over the sea in front of us. 
On February 6, off Punta Mala, one rose from the sea before our 
boat and flew away through a host of circling terns. 
CAIRINA MOSCHATA (Linnaeus): Muscovy Duck, Pato Real 
Anas moschata LINNAEUS, Systema naturae, ed. 10, vol. 1, 1758, p. 124. (Brasil.) 
On January 23, at sunrise, half a dozen of these ducks, of maxi- 
mum size, flew past the Colonia Central over the sea on a course 
that led past Punta Damas toward the distant mainland. These were 
evidently wild birds, and quite different from the domestic stock, 
with plumage partly pied with white, that flew about regularly 
between the stream at headquarters and that at Hato a mile south. 
AYTHYA AFFINIS (Eyton): Lesser Scaup, Pato Pechiblanco 
Fuligula affinis Eyton, Monograph of the Anatidae or duck tribe, June 1838, 
p. 157. (North America.) 
On January 14 five rested on the small lagoon back of Catival. 
Such an occurrence on this small body of water in its remote loca- 
tion is interesting evidence of the broad line of flight through which 
these ducks perform their migrations. 
Family CATHARTIDAE: American Vultures 
CORAGYPS ATRATUS (Bechstein): Black Vulture, Gallinazo 
Vultur atratus BECHSTEIN, in John Latham, Allgemeine Uebersicht der Végel, 
Bd. 1, Anhang, 1793, p. 655. (Florida.) 
Gallinazos were in constant attendance about the buildings at head- 
quarters and the work camps—scavengers in search of any source of 
food. While waiting at the abattoir for some scrap of refuse it was 
amusing to see them running and hopping about, fighting among 
themselves, often with the tail erect like a rail. Once I saw one try 
to drive a laughing gull from a bit of food on the open beach, but 
