recovery from the Exxon Valdez oil spill: A population genetics perspective.
Chrissy Cookson, a keen breeder and show exhibitor from Newtown in Mid Wales said: "I'm proud to be one of the founder members of the Welsh Harlequin Duck
Many biologists are concerned about the fact that in the western Lower 48 and in Canada, bag limits and seasons for harlequin ducks
are the same as those for mallards and other common species," Cassirer says.
At last month's Royal Welsh Spring Festival, Builth Wells, S4C's Ffermio presenter Meinir Jones formally launched the Welsh Harlequin Duck
Society during the Welsh Federation of Poultry Clubs' spring show.
Among the long-tailed ducks, golden eyes, scoters, loons, grebes, mergansers, and eiders were two surprises: gorgeous harlequin ducks
and penguin-like murres.
Duck sighting: Harlequin ducks
are anadromous, leaving the sea for the rivers to breed, the only kind in Oregon.
The research uses biomarkers to reveal long-term exposure to oil in harlequin ducks
and demonstrates how the consequences of oil spills are measured in decades rather than years.
He used to breed red squirrels, has successfully bred a son, Patrick, who is making his name as a jockey, and is now attempting to breed harlequin ducks
, seemingly because nobody else has yet managed to do it in Britain.
A raft of harlequin ducks
, a mixture of brightly colored males and their duller female companions, was my reward that day 20 years ago.
While the DND has conducted surveys to identify concentrations of wildlife, no research has been conducted to explain how black ducks, peregrine falcons and Harlequin ducks
or other wildlife may be affected, the review reports.
Among the most significant declines: Loon and scoter populations at oiled sites were 86 percent lower than expected and harlequin ducks
76 percent lower than expected.
A few harlequin ducks
landed in front of us and some others to the east slightly, but not in range except for some drab hens.