Maps of the birds of the Western Palearctic Region

Ducks

Aythya ferina
Lakes, ponds, sluggish streams, esp. with emergent vegetation.
From Iceland, British Isles, s Sweden and s Finland e across c Russia and sw Siberia to Lake Baikal and w Yakutia, s to s,e Spain, s France, Switzerland and the Balkans, locally in Turkey and nw Iran, to the Black, Caspian and Aral seas and Kazakhstan, and w,ne China.
Formerly Tunisia.
Vagrant to w Alaska and California.
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The Pochard forms a superspecies* with the Canvasback (Aythya valisineria) of North America although it looks superficially more like the Redhead (Aythya americana) also of North America but which has a yellow iris rather than a red one in the male.
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-superspecies*
A superspecies is a grouping of very closely related and largely allopatric species.This generally means that they have common ancestry but have developed over time into true species due to their geographic isolation.
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descrizione:
II Moriglione ha dimensioni medio-grandi, forme abbastanza tozze, becco lungo circa quanto la testa, ali non lunghe, coda breve e arrotondata.
Il piumaggio del maschio è completo da fine settembre a luglio e si caratterizza per capo e collo di colore castano-rossiccio, dorso e fianchi grigio chiari vermicolati, petto e sottocoda neri; l'abito eclissale è simile a quello della femmina, ma col dorso più chiaro.
La femmina è brunastra scura con guance, gola e base del becco più chiare. Ambedue i sessi hanno la banda alare grigiastra, il becco nero con striscia azzurrognola mediana, più opaca nella femmina, e le zampe grigie. In volo, visto da sotto, il maschio è riconoscibile per la testa castana, il petto nero, l'addome bianco, il sottocoda nero e le ali bianco-grigiastre; la femmina appare più bruna, senza netti contrasti di colore.
Lunghezza cm 42-50, peso gr 700-1.100.
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Aythya collaris
Marshes, lakes, rivers, swamps, esp. with dense emergent vegetation. From ec,se Alaska and c British Columbia e across c Canada Newfoundland and Nova Scotia, and s to ne Calif., se Arizona, s Colorado, and from n Nebraska e across n U.S. to New York and
New England; Georgia (Augusta), n Florida in Alachua County.
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Vagrant w Europe, annually in Great Britain.
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Aythya nyroca
Lakes with emergent vegetation, quiet lagoons, marshes, often in steppe
or desert regions.
From w Europe w to France and Spain and n Africa in Morocco and Libya, e across s Europe, Turkey, s Russia and Iran to cn Arabia, Altai, Kazakhstan, w Afghanistan, n India and w,c China from Sinkiang e to Inner Mongolia and n Szechwan.
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Aythya ferina

Common Pochard

Common

has bred: Italy, Creta, Tunisia

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Aythya collaris

Ring-necked Duck

Vagrant

w Europe, Azores, Canary Is,

* no map

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Aythya nyroca

Ferruginous Duck

Local uncommon

has bred: Netherlands, Italy,

Morocco, Algeria, Israel,

Saudi Arabia

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Aythya fuligula
Marshes, ponds, lakes, swamps, esp. with emergent vegetation.
From Iceland, Faroe Is., British Isles, Bear I. (probably) and Scandinavia
e across n,c Russia s to ca. 50°N, and n Siberia to Kamchatka and Commander and Kuril is., s to France, Switzerland, Yugoslavia and Romania, Transcaucasus, n Mongolia, ne China, s Siberia e to Sakhalin and Japan. Rare migrant and wintering in coastal N. America, vagrant inland.
Almost annually in New England, New York, California.
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Aythya marila
Tundra lakes and ponds, in migration open fresh water and seacoasts. From Iceland, Faroe Is., British Isles, Scandinavia incl. Gotland, and Estonia e across Arctic Russia and Siberia to Kamchatka and Kuril and Commander is. From w,c,s Alaska from Kotzebue Sound s to Aleutians and Alaska Peninsula, e across n Yukon, nw,nc,s Mackenzie, s Keewatin, n Ontario, and around Hudson and James bays, rarely s to c Canada.
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Aythya affinis
Grassy ponds, lakes, marshes, rivers, in migration also seacoasts.
From c Alaska, c Yukon, nw,s Mackenzie, n Manitoba, w,s Ontario and wc Quebec s to c,ne Calif., s Idaho, ne Colorado, c Nebraska, Iowa, n Illinois, n Kentucky and n Ohio.
Vagrant in w Europe.
(A. marila x A. fuligula hybrids).
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Aythya affinis
This is one of our most abundant ducks and surely one of the best known. It goes mainly by two names, "blue-bill" or dos gris. In size and color it resembles the Ring-necked Duck, but it has a blue bill, lacking the white ring around the tip. The back is speckled black and white and, in sunlight
at a distance, reflects only slightly darker than the white sides, whereas the Ring-neck's back is black. Seen from the side the scaup lacks the prominent vertical white stripe, or slash, before the wing that is so characteristic of the male Ring-neck. In the female scaup the line of demarcation is very sharp between the creamy white area at the base of
the bill and the dark face; in the Ring-neck this light area blends almost imperceptibly into the dark-colored area of the cheeks. The distinctions between the Lesser and Greater Scaups are discussed in the preceding account.
A few Lesser Scaup are almost always present on some of our larger lakes in summer, but there is no evidence that the species has ever nested in the state. Migration begins to bring in the wintering population around the first of October, although usually the species is not present in large numbers until the latter part of the month. Most of our scaups are gone by early April. Especially worthy of mention are the great rafts, often numbering into the thousands, that scaups form in winter along the rim of the Gulf. --George H. Lowery, Jr., 1974, Louisiana Birds -.
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