Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • proper noun A taxonomic genus within the subfamily Anatinae — the canvasback, redhead, pochard and other ducks.

Etymologies

Sorry, no etymologies found.

Examples

  • Important breeding wetland species include marbled teal Marmaronetta angustirostris (VU,35), white-headed duck Oxyura leucocephala (EN,400, which nest mainly in artificial ponds in surrounding areas), white-eyed pochard Aythya niroca (VU), purple gallinule Porphyrio porphyrio and crested coot Fulica cristata.

    Doñana National Park, Spain

  • The reserve is the only nesting place in Bulgaria for black cormorants Phalacrocorax carbo (90-540 pairs) and ferruginous duck Aythya nyroca (V: 60 pairs), and is the largest wintering ground for red-breasted goose Branta ruficollis (V: 20-50 pairs).

    Srebarna Nature Reserve, Bulgaria

  • These data clearly indicate dramatic declines in the abundance of several waterfowl species (e.g., scoters – Melanitta spp., lesser scaup – Aythya affinis) with core breeding areas located in the northwestern boreal forest of Canada.

    Impacts on aquatic birds and mammals in the Arctic

  • The globally threatened ferruginous duck (Aythya nyroca) is also a resident of the basin.

    Po Basin mixed forests

  • It contains the only nesting site in Italy of pygmy cormorant (Phalacrocorax pygmaeus), and is also home to the globally threatened ferruginous duck (Aythya nyroca).

    Po Basin mixed forests

  • The most numerous species are wigeon Anas penelope (39,000: 112,000 in the1970s), common pochard Aythya ferina (120,000 in 1971) and coot Fulica atra (36,000: 188,000 in 1973).

    Ichkeul National Park, Tunisia

  • Other wintering wetland birds include the threatened marbled teal Marmoronetta angustirostris, ferruginous duck Aythya nyroca, and corncrake, Crex crex; also high numbers of green-winged teal Anas crecca, northern pintail Anas acuta, northern shoveler Anas clypeata and black-winged stilt Himantopus himantopus.

    Ichkeul National Park, Tunisia

  • In the east, the Madagascar pochard (Aythya innotata) has only been recorded three times since 1960; the Alaotra grebe (Tachybaptus rufolavatus, CR) has not been confirmed in the last decade.

    Biological diversity in Madagascar and the Indian Ocean Islands

  • The destruction and degradation of Mediterranean wetlands threaten widespread species occurring in the hotspot such as the Dalmatian pelican (Pelecanus crispus, VU), which winters in the eastern parts of the hotspot, as well as marbled teal (Marmaronetta angustirostris, VU) and ferruginous duck (Aythya nyroca).

    Biological diversity in the Mediterranean Basin

  • A number of globally threatened bird species migrate through, nest or winter in this area, including the Dalmation pelican (Pelecanus crispus), pygmy cormorant (Phalacrocorax pygmaeus), white-headed duck (Oxyura leucocephala) and ferruginous duck (Aythya nyroca).

    Euxine-Colchic deciduous forests

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