include a female at Morfa Madryn, near Llanfairfechan, two drakes were off Criccieth and 14 were with Velvet Scoters off Colwyn Bay last week.
In North America, diving ducks are represented by canvasbacks, redheads, ring-necked ducks, greater scaup
and lesser scaup
Queen's University's Bob Montgomerie, an expert on reproductive strategies who was not involved in the study, said in a statement: "The question now is whether the observed increase in penis size in Lesser Scaup
under the threat of sperm competition actually gives males a competitive advantage.
dabbling duck 0 0 400 Redhead 0 933 14 Ring-necked Duck 0 0 0 Canvasback 0 0 1 Lesser Scaup
0 0 15 Ruddy Duck 0 2 22 Eared Grebe 0 11 4 Clark's Lire be 0 7 0 Db-crested Cormorant 0 1 0 American White Pelican 59 70 19 (.
This was a different kind of treasure for us and soon singles and doubles of greater scaup
were buzzing our decoy spread set at the tip of a long, brush-covered island.
Commonly observed species include common merganser, bufflehead, common goldeneye, hooded merganser, mallard, black duck and greater and lesser scaup
The tundra-dwelling Greater Scaup
is under pressure from human-caused pollution and climate change, which affects ecosystems in its breeding grounds.
The remainder of the week's sightings are offshore: a velvet scoter and five scaup
among the common scoters from Llanddulas, great northern divers from Abersoch, Holyhead and Foryd Bay, and at Beddmanarch Bay and Harlech feeding with Slavonian grebes.
The primary concern we have is the diving ducks--canvasbacks, redheads and scaup
," says Dale Hamburg, chief biologist for Ducks Unlimited.
Migratory species that may be affected include the Lesser Scaup
, Blue-winged Teal, Common Loon, American White Pelican, Northern Gannet, Peregrine Falcon, Northern Harrier, Piping Plover, Sanderling, and Red Knot.
Among lesser scaup
and ruddy ducks, the regrowth varies in length or timing depending on whether males have to compete with a bunch of other guys, said Patricia Brennan of Yale University.
This report describes West Nile virus (WNV)-associated mortality in captive lesser scaup
(Aythya affinis) ducklings that occurred in Saskatchewan, Canada, in July and August 2007.
And for the first time two winter visitors have been added to the red list, the dunlin and the scaup
, because of declines in their wintering populations.
Visitors to our shores (from left): The Lesser Scaup
, Great White Egret, Great Northern Diver, Kumlien's Gull and the Bittern; The Wood Duck which has made a home in a Birmingham Canal Picture, ANITA MARIC
The guided field hunts offer the shooting sportsman countless opportunities for mallards, teal, gadwall, pintail, widgeon, shovelers, ringneck, ruddies, greater and lesser scaup
, and occasional canvasback and redhead.