FAMILY ANATIDAE 



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lakes at 1280 meters elevation near El Volcan, Chiriqui, and I shot a 

 female here on February 15, 1960. They come regularly also to the 

 artificial lakes in the banana farms near Changuinola, where I re- 

 corded them in January 1958. 



The main body of these ducks in Panama winters on Gatun and 

 Madden Lakes and on the broad stretches of water on the Rio 



Fig. 28. — Foot of lesser scaup, pato pechiblanco, Aythya affinis, with a distinct 



lobe on the hindtoe. 



Chagres above Gamboa. Here they are hunted regularly and become 

 quite wild. There are usually a few on the small lakes in the Pedro 

 Miguel, Chiva Chiva area, and a few come with other ducks in the 

 marshes along the Rio La Jagua, where from one to a dozen may be 

 shot annually, though the water areas here in the main are too shallow 

 to attract ducks that feed by diving. I recorded five on a small lagoon 

 at Catival on Isla Coiba, January 14, 1956. Once, on December 31, 

 1955, I saw five on the salt water of the bay offshore from Panama 

 Viejo, but this is unusual. 



