Then it happens, you spot a long-tailed duck (Clangula
hyemalis; hereafter LTDU).
Fish are absent, but during the growing season various waterbirds, including Red Phalaropes (Phalaropus fulicarius), Long-tailed Ducks (Clangula
hyemalis), and Steller's Eiders (Polysticta stelleri), feed on the abundance of planktonic and benthic invertebrates.
The ship SS Clangula
probably picked up cargo at Bristol and was torpedoed off Hartland point, North Devon, on November 19, 1917.
Bedload transport and other physical forcing variables (e.g., erosion processes) were primarily responsible for the differences across sampling stations; however, differential predation by sea ducks (Melanitta nigra [L.] and Clangula
hyemalis [L.]), especially on clams <10 mm SL, across the study area may have added to the observed differences in density.
affinis), Long-tailed Duck (Clangula
hyemalis), Hooded Merganser (Lophodytes cucullatus), Bufflehead (Bucephala albeola), Harlequin Duck (Histrionicus histrionicus), Surf Scoter (Mehnitta perspicillata), White-winged Scoter (M.
The three most common remaining freshwater duck species in Europe are two dabbling ducks teal and wigeon, in addition to one diving duck common goldeneye Bucephala clangula
With any luck, the bellowing is soon replaced by the whistling wings of surf scoters (Melanitta perspicilatta), the relentless whe-oo-hoo of black scoters (Melanitta nigra), and boisterous ow-owooolee of long-tailed ducks (Clangula
hyemalis) buzzing the decoys in the early morning light.
Dive durations of scaly- sided mergansers (23.6 s) were similar to values reported for Harlequin ducks Histrionicus histrionicus (22.7 s, Goudie, 1999), Barrow's goldeneye Bucephala islandica (17.5-24.3 s, Bourget et al., 2007), and common goldeneye Bucephala clangula
(19.7-23.9 s, Bourget et al.,
Mae cwtieir (Coot) a hwyaid copog (Aythya fuligula; Tufted duck) yma, ac yn y gaeaf mae'r corhwyaid (Anas crecca; Teal) a'r hwyaid llygad aur (Bucephala clangula
; Goldeneye) yma.
Dendritobilharzia species have been reported from avian hosts including Aix sponsa, Anas creca, Anas discors, Anas platyrhynchos, Anas querquedula, Anas rhynchotis, Anas superciliosa superciliosa, Aythya affinis, Aythya americana, Aythya ferina, Aythya novaeseelandiae, Bucephala albeola, Bucephala clangula
, Cygnus olor, Cygnus atratus, Cygnus columbianus, Mergus merganser, Mergus serrator, Nettion crecca and Tadorna variegate from Poland (Sulgostowska, 1972; Khalifa, 1976), New Zealand (Rind, 1989), North America (Ulmer and Vande Vusse, 1970), Brazil (Freitas and Costa, 1972), Czech Republic (Kalarova et al., 1989, 1997), Germany (Palm, 1965); Texas (Canaris et al., 1981), India (Chauhan et al., 1973 and France (Bayssade-Dufour et al., 2006).
Pasio gardd y gors a heibio i bwll yr hwyaden lygad-aur (Bucephala clangula
; goldeneye) ac eistedd unwaith eto yn llygad yr haul - wrth y gorlan Asiaidd y tro hwn, ac oedd, roedd 'na ir ddwr yma hefyd!