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Topic: Aythya

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	Aythya: Facts and details from Encyclopedia Topic (Site not responding. Last check: 2007-10-08)
		The ring-necked duck (aythya collaris) is a smaller diving duck....
		The madagascar pochard (aythya innotata) is a species of the genus aythya, probably extinct....
		The new zealand scaup (aythya novaeseelandiae) is a diving duck species of the genus aythya....
	www.absoluteastronomy.com /encyclopedia/a/ay/aythya.htm (707 words)

	Technorati Tag: aythya
		This page shows blog posts, photos, and links that have been tagged aythya.
		To contribute to this page, just post to your blog and include this code.
		Posts tagged Aythya per day for the last 30 days.
	www.technorati.com /tag/aythya (186 words)

	Oxygen uptake during post dive recovery in a diving bird Aythya fuligula: implications for optimal foraging models -- ...
		Oxygen uptake during post dive recovery in a diving bird Aythya fuligula: implications for optimal foraging models -- Parkes et al.
		Carbone, C. and Houston, A. Patterns in the diving behaviour of the pochard, Aythya ferina: a test of an optimality model.
		Woakes, A. and Butler, P. Swimming and diving in the tufted ducks Aythya fuligula, with particular reference to heart rate and gas exchange.
	jeb.biologists.org /cgi/content/full/205/24/3945 (4762 words)

	Aythya hybrid from Long Island, New York (Site not responding. Last check: 2007-10-08)
		Hybridization in the Aythya group of diving ducks is a complex and fascinating topic.
		Hybrids in female-type plumage are poorly understood and thus remain extremely difficult to identify.
		Andrew Middleton's web site includes a image of a similar looking drake Aythya hybrid (tufted x scaup?) photographed by Phil Vines in the Lea Valley, NE London, UK on on 4 Feb 2000.
	www.oceanwanderers.com /Aythyahybrid.html (1049 words)

	Baer's Pochard (Aythya baeri) - BirdLife species factsheet (Site not responding. Last check: 2007-10-08)
		Males are best told from other Aythya ducks by combination of flish head, upper neck and upperparts, whitish eyes and chestnut-brown and white flanks.
		Range & population Aythya baeri breeds in the Amur and Ussuri basins in Russia and north-eastern China.
		It winters in Japan, North Korea, South Korea, eastern and southern mainland China, Hong Kong (China), Taiwan (China), India, Bangladesh, Nepal, Bhutan, Thailand, Myanmar and Vietnam and is a rare migrant to Mongolia.
	www.birdlife.org /datazone/species?action=SpcHTMDetails.asp&sid=478&m=0 (649 words)

	Rare Birds in Spain: Identification
		This impression was enhanced depending on light angle and in some cases the head appeared nearly fl.
		However, the pattern of the bill is wrong for that species (without subterminal band), the head is differently shaped, being more peaked, and the mantle is darker.
		La especie más similar es Aythya americana, aunque no presenta franja subterminal blanca en el pico, tiene la cabeza más en punta y el dorso parece ser más oscuro.
	www.rarebirdspain.net /arbsi018.htm (553 words)

	Aythya marila orange bowl Aythya marila
		Search the web for Aythya marila or any other information.
		Find aythya marila and more at Lycos Search.
		Read about aythya marila in the free online encyclopedia and dictionary.
	www.find-ask.com /Encyclopedia/Aythya_marila/Aythya_marila.html (323 words)

	Bibliography for Lesser Scaup (Aythya affinis)
		The bibliography provides 1,320 citations pertinent to Lesser Scaup (Aythya affinis) and covers a wide variety of sources.
		Key words (in italics) follow each citation to allow more specific information on each citation and more thorough searches for information of interest; also noted in the key words is whether greater scaup (Aythya marila) is included or if the citation combines greater and lesser scaup as "scaup."
		Noted in the key words is whether greater scaup (Aythya marila) is included or if the citation combines greater and lesser scaup as "scaup." Those citations that have been checked for accuracy against the original are preceded by an asterisk.
	www.nbii.gov /metadata/mdata/brd-bib/usgs_brd_npwrc_b_lesserscaupbiblio.html (370 words)

	B-Mail(sm): ID-FRONTIERS for March 1-9, 2002 (Site not responding. Last check: 2007-10-08)
		Most duck do their courtship display on their wintering grounds, so a tufted duck/lesser scaup pairing could happen here in the wild and if I remeber correctly the male duck usually follwos the female to her breeding grounds.
		I half wonder if the "Lesser Scaup" isn't a throw back to ancestral aythya, given that so many combinations seem to generate birds of this type (see the Collins Guide for paintings of several combos).
		Records of Tufted Duck x Lesser Scaup hybrids, on the other hand, seem to be very scarce; the author found only two references to birds that were suspected to be of this hybrid combination, namely: - Peterjohn, B. (1989): Description of a probable Tufted Duck x Lesser Scaup hybrid.
	www.virtualbirder.com /bmail/idfrontiers/200203/w1 (3463 words)

	Galloanserae: A Critical Examination - EvoWiki (Site not responding. Last check: 2007-10-08)
		In ducks and their allies the articular surfaces on the parasphenoid are distinct, pedicellate and ovoid structures while in Galliformes they are far more indistinct and are not as markedly set off from the parasphenoid rostrum.
		Dissection of embryonic duck (Aythya spp.) and chick (Gallus gallus) to determine the morphogenesis of the parasphenoid articular surfaces in both Anseriformes and Galliformes, strongly corroborated the hypothesis that these structures are not homologous across these taxa (Olson and Feduccia 1980b).
		In Anseriformes the parasphenoid articular surfaces arise as de novo cartilaginous condensations that only late in ontogeny fuse to the parasphenoid while displaying no medial contact.
	wiki.cotch.net /index.php/Galloanserae:_A_Critical_Examination (5029 words)

	Bibliography for Lesser Scaup (Site not responding. Last check: 2007-10-08)
		The bibliography provides 1,320 citations pertinent to Lesser Scaup (Aythya affinis) and covers a wide variety of sources, including some unpublished and "gray" literature.
		scaupbib.zip (110K) Bibliography for Lesser Scaup (Aythya affinis)
		Installation: This is an archived Word Perfect 6.0 file.
	www.npwrc.usgs.gov /resource/literatr/scaupbib/scaupbib.htm (205 words)

	Tufted duck - Aythya fuligula - ARKive
		The specific scientific name, fuligula may derive from the Latin word fuligo meaning soot, and drakes have glossy fl plumage on their head, breast and back.
		In contrast, the side and belly have a conspicuous white band but despite this distinctive uniform, tufted ducks can be mistaken for other species such as scaup Aythya marila and the vagrant ring-necked duck Aythya collaris from North America.
		Like the tufted duck, these birds also have a grey bill with a fl tip.
	www.arkive.org /species/ARK/birds/Aythya_fuligula (194 words)

	Ferruginous Duck (Aythya nyroca) - BirdLife species factsheet (Site not responding. Last check: 2007-10-08)
		Summary Aythya nyroca breeds principally in south-western Asia (east to China and south to Pakistan and India), central and eastern Europe, and north Africa
		Recommended citation BirdLife International (2006) Species factsheet: Aythya nyroca.
		To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums
	www.birdlife.org /datazone/sites?action=SpcHTMDetails.asp&sid=476&m=0 (1058 words)

	M. R. Ducks (Ring-necked Ducks, Aythya collaris) (Site not responding. Last check: 2007-10-08)
		Frankly, we're tickled just to have these ducks on
		The Ring-necked Duck, Aythya collaris, takes its name from an obscure collar around the base of the male's neck, but we've always believed it should have been called "Ring-BILLED Duck" because of the white bands near the tip and base of an otherwise-blue bill sported by the male.
		The drake has an orange eye and an iridescent purplish head that often looks fl, a dark metallic-green breast, a dark back, and a vertical white "crescent moon" on each grayish-colored side.
	www.hiltonpond.org /ThisWeek040208.html (1367 words)

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