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New Creative Relevant Search filters Aythyini Stock Photos and Images  (796) Narrow your search: Black & white Page 1 of 8 pochard pochardhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/pochard-image274487135.html glorious erpel glorious erpelhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/glorious-erpel-image225336708.html juvenile tufted duck is approaching quick with a staring view juvenile tufted duck is approaching quick with a staring viewhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/juvenile-tufted-duck-is-approaching-quick-with-a-staring-view-image332381801.html pochard pochardhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/pochard-image274487966.html Male Rosybill (Netta peposaca).This duck was photographed at the Wildfowl & Wetlands Trust.Martin Mere.Lancashire.England. Male Rosybill (Netta peposaca).This duck was photographed at the Wildfowl & Wetlands Trust.Martin Mere.Lancashire.England.https://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/male-rosybill-netta-peposacathis-duck-was-photographed-at-the-wildfowl-wetlands-trustmartin-merelancashireengland-image258963770.html pochard pochardhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/pochard-image274127277.html Notice board duck, Aythya ferina, male, winter, lake, iceboundly, sheet ice, birds, bird, wild animals, wild animal, birds passage, bird passage, goose's birds, Anseriformes, anatids, Anatidae, diving ducks, Aythyini, little men, manly, Common Porchard Notice board duck, Aythya ferina, male, winter, lake, iceboundly, sheet ice, birds, bird, wild animals, wild animal, birds passage, bird passage, goose's birds, Anseriformes, anatids, Anatidae, diving ducks, Aythyini, little men, manly, Common Porchardhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-notice-board-duck-aythya-ferina-male-winter-lake-iceboundly-sheet-122872212.html AFRICAN POCHARD Netta erythrphthalma. Female diving duck. Swimming on water surface. AFRICAN POCHARD Netta erythrphthalma. Female diving duck. Swimming on water surface.https://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-african-pochard-netta-erythrphthalma-female-diving-duck-swimming-on-146635840.html pochard pochardhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/pochard-image274126742.html Lake, notice board duck, Aythya ferina animals, animal, birds, bird, birds passage, bird passage, goose's birds, Anseriformes, anatids, Anatidae, diving ducks, Aythyini, little men, Common Porchard, swim, waters Lake, notice board duck, Aythya ferina animals, animal, birds, bird, birds passage, bird passage, goose's birds, Anseriformes, anatids, Anatidae, diving ducks, Aythyini, little men, Common Porchard, swim, watershttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-lake-notice-board-duck-aythya-ferina-animals-animal-birds-bird-birds-122870779.html Canvasback Aythya valisineria. Duck, or female. North American diving duck. Canvasback Aythya valisineria. Duck, or female. North American diving duck.https://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-canvasback-aythya-valisineria-duck-or-female-north-american-diving-146636675.html pochard pochardhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/pochard-image274126572.html . Bulletin of the British Ornithologists' Club. . Hybrid A. sponsa N, rufina Fig. 7. Syrinx of hybrid Aythyini x Cairinini. Ventral view x f. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. British Ornithologists' Club. London : British Ornithologists' Club . Bulletin of the British Ornithologists' Club. . Hybrid A. sponsa N, rufina Fig. 7. Syrinx of hybrid Aythyini x Cairinini. Ventral view x f. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. British Ornithologists' Club. London : British Ornithologists' Clubhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/bulletin-of-the-british-ornithologists-club-hybrid-a-sponsa-n-rufina-fig-7-syrinx-of-hybrid-aythyini-x-cairinini-ventral-view-x-f-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-british-ornithologists-club-london-british-ornithologists-club-image233954882.html bittern bitternhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/bittern-image274490525.html Canvasback Aythya valisineria. A North American diving duck. Adult female plumage. Canvasback Aythya valisineria. A North American diving duck. Adult female plumage.https://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-canvasback-aythya-valisineria-a-north-american-diving-duck-adult-female-146636696.html . Bulletin of the British Ornithologists' Club. Bulletin B.O.C. 11 Vol. 88. A. fuUgula ^ Hybrid A. guerguedula Fig. 6. Tracheae and syringes of hybrid Aythyini x Anatini. Ventral view < |. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. British Ornithologists' Club. London : British Ornithologists' Club . Bulletin of the British Ornithologists' Club. Bulletin B.O.C. 11 Vol. 88. A. fuUgula ^ Hybrid A. guerguedula Fig. 6. Tracheae and syringes of hybrid Aythyini x Anatini. Ventral view < |. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. British Ornithologists' Club. London : British Ornithologists' Clubhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/bulletin-of-the-british-ornithologists-club-bulletin-boc-11-vol-88-a-fuugula-hybrid-a-guerguedula-fig-6-tracheae-and-syringes-of-hybrid-aythyini-x-anatini-ventral-view-lt-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-british-ornithologists-club-london-british-ornithologists-club-image233954958.html Tufted Duck Tufted Duckhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/tufted-duck-image274486167.html Australian White-eye or Hardhead (Aythya australis australis). Male. Australian White-eye or Hardhead (Aythya australis australis). Male.https://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-australian-white-eye-or-hardhead-aythya-australis-australis-male-87598050.html . Bulletin of the British Ornithologists' Club. . Fig. 1. Ventral, lateral, and dorsal views of the tracheal bulla of the Marbled Teal. The ruled line indicates one centimeter. Pink-headed Duck {Rhodonessa caryophyllacea), as shown in the illus- trations of Garrod (1875) and Beddard (1898). Thus the very difl'erent tracheal bulla types o^ Anas and the Netta-Aythya group are neatly bridged by the intermediate types present in the Marbled Teal and the Pink- headed Duck, and a close relationship between the tribes Anatini and Aythyini is thereby indicated.. Please note that these images are extr . Bulletin of the British Ornithologists' Club. . Fig. 1. Ventral, lateral, and dorsal views of the tracheal bulla of the Marbled Teal. The ruled line indicates one centimeter. Pink-headed Duck {Rhodonessa caryophyllacea), as shown in the illus- trations of Garrod (1875) and Beddard (1898). Thus the very difl'erent tracheal bulla types o^ Anas and the Netta-Aythya group are neatly bridged by the intermediate types present in the Marbled Teal and the Pink- headed Duck, and a close relationship between the tribes Anatini and Aythyini is thereby indicated.. Please note that these images are extrhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/bulletin-of-the-british-ornithologists-club-fig-1-ventral-lateral-and-dorsal-views-of-the-tracheal-bulla-of-the-marbled-teal-the-ruled-line-indicates-one-centimeter-pink-headed-duck-rhodonessa-caryophyllacea-as-shown-in-the-illus-trations-of-garrod-1875-and-beddard-1898-thus-the-very-diflerent-tracheal-bulla-types-o-anas-and-the-netta-aythya-group-are-neatly-bridged-by-the-intermediate-types-present-in-the-marbled-teal-and-the-pink-headed-duck-and-a-close-relationship-between-the-tribes-anatini-and-aythyini-is-thereby-indicated-please-note-that-these-images-are-extr-image233952054.html Tufted Duck Tufted Duckhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/tufted-duck-image274490596.html Australian White-eye or Hardhead (Aythya australis australis). Diving duck. Male. Australian White-eye or Hardhead (Aythya australis australis). Diving duck. Male.https://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-australian-white-eye-or-hardhead-aythya-australis-australis-diving-87600685.html . Bulletin of the British Ornithologists' Club. N. erythrophthalama. A. fuligula Hybrid A. ferina Hybrid A. nyroca Fig. 4. Tracheae and syringes of hybrid Aythyini—Netta crosses and Aythya crosses. Ventral view x f The general form of the trachea of the Anatini has been described above. In the Cairinini the syrinx is highly variable in size and form. For example in Nettapus, spp., the Pygmy Geese, the bulla is extremely small, in Plectropterus, the Spur-winged Goose, it is large, discoidal and ossified but thin walled. brasiliensis has a small syrinx indistinguishable in form from many of the . Bulletin of the British Ornithologists' Club. N. erythrophthalama. A. fuligula Hybrid A. ferina Hybrid A. nyroca Fig. 4. Tracheae and syringes of hybrid Aythyini—Netta crosses and Aythya crosses. Ventral view x f The general form of the trachea of the Anatini has been described above. In the Cairinini the syrinx is highly variable in size and form. For example in Nettapus, spp., the Pygmy Geese, the bulla is extremely small, in Plectropterus, the Spur-winged Goose, it is large, discoidal and ossified but thin walled. brasiliensis has a small syrinx indistinguishable in form from many of the https://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/bulletin-of-the-british-ornithologists-club-n-erythrophthalama-a-fuligula-hybrid-a-ferina-hybrid-a-nyroca-fig-4-tracheae-and-syringes-of-hybrid-aythyininetta-crosses-and-aythya-crosses-ventral-view-x-f-the-general-form-of-the-trachea-of-the-anatini-has-been-described-above-in-the-cairinini-the-syrinx-is-highly-variable-in-size-and-form-for-example-in-nettapus-spp-the-pygmy-geese-the-bulla-is-extremely-small-in-plectropterus-the-spur-winged-goose-it-is-large-discoidal-and-ossified-but-thin-walled-brasiliensis-has-a-small-syrinx-indistinguishable-in-form-from-many-of-the-image233954980.html Tufted Duck Tufted Duckhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/tufted-duck-image274485605.html Australian White-eye or Hardhead (Aythya australis australis). Diving duck. Male. Australian White-eye or Hardhead (Aythya australis australis). Diving duck. Male.https://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-australian-white-eye-or-hardhead-aythya-australis-australis-diving-87600709.html . Bulletin of the British Ornithologists' Club. Vol. 88 14 Bulletin B.O.C. places Marmaronetta as a branch on the line leading to Anas but near to the branch to the Aythyini. However it is possible that we have an instance of reticulate evolution in which angustirostris has evolved from a hybrid between an ancestral species of the Anatini and an ancestral species of the. A. angustirostris C. leucophrys Fig. 8. Two further species with fenestrated bullae. Ventral view x | Aythyini. Although many factors operate against the evolution of a new species from an original hybrid (Sibley, 1959) the fa . Bulletin of the British Ornithologists' Club. Vol. 88 14 Bulletin B.O.C. places Marmaronetta as a branch on the line leading to Anas but near to the branch to the Aythyini. However it is possible that we have an instance of reticulate evolution in which angustirostris has evolved from a hybrid between an ancestral species of the Anatini and an ancestral species of the. A. angustirostris C. leucophrys Fig. 8. Two further species with fenestrated bullae. Ventral view x | Aythyini. Although many factors operate against the evolution of a new species from an original hybrid (Sibley, 1959) the fahttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/bulletin-of-the-british-ornithologists-club-vol-88-14-bulletin-boc-places-marmaronetta-as-a-branch-on-the-line-leading-to-anas-but-near-to-the-branch-to-the-aythyini-however-it-is-possible-that-we-have-an-instance-of-reticulate-evolution-in-which-angustirostris-has-evolved-from-a-hybrid-between-an-ancestral-species-of-the-anatini-and-an-ancestral-species-of-the-a-angustirostris-c-leucophrys-fig-8-two-further-species-with-fenestrated-bullae-ventral-view-x-aythyini-although-many-factors-operate-against-the-evolution-of-a-new-species-from-an-original-hybrid-sibley-1959-the-fa-image233954871.html bittern bitternhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/bittern-image274490790.html Australian White-eye or Hardhead (Aythya australis australis). Diving duck. Male. Australian White-eye or Hardhead (Aythya australis australis). Diving duck. Male.https://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-australian-white-eye-or-hardhead-aythya-australis-australis-diving-87599065.html . Bulletin of the British Ornithologists' Club. Vol. 88 12 Bulletin B.O.C Aythyini x Anatini Crosses studied Netta rufina X Anas platyrhynchos X Anas poeciloryhncha Forster Spot-billed Duck Netta peposaca (Vieillot) Rosybill X Anas aucklandica (G. R. Gray) Brown Teal Aythya fuligula X Anas qiierquedula The hybrids between these two tribes are perhaps the most interesting because of the widely differing forms in the parent species. rufina has hybridised with two typical species of Anas. (Fig. 6). The trachea of the hybrid with platyrhynchos is not different in size from the parents but the trac . Bulletin of the British Ornithologists' Club. Vol. 88 12 Bulletin B.O.C Aythyini x Anatini Crosses studied Netta rufina X Anas platyrhynchos X Anas poeciloryhncha Forster Spot-billed Duck Netta peposaca (Vieillot) Rosybill X Anas aucklandica (G. R. Gray) Brown Teal Aythya fuligula X Anas qiierquedula The hybrids between these two tribes are perhaps the most interesting because of the widely differing forms in the parent species. rufina has hybridised with two typical species of Anas. (Fig. 6). The trachea of the hybrid with platyrhynchos is not different in size from the parents but the trachttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/bulletin-of-the-british-ornithologists-club-vol-88-12-bulletin-boc-aythyini-x-anatini-crosses-studied-netta-rufina-x-anas-platyrhynchos-x-anas-poeciloryhncha-forster-spot-billed-duck-netta-peposaca-vieillot-rosybill-x-anas-aucklandica-g-r-gray-brown-teal-aythya-fuligula-x-anas-qiierquedula-the-hybrids-between-these-two-tribes-are-perhaps-the-most-interesting-because-of-the-widely-differing-forms-in-the-parent-species-rufina-has-hybridised-with-two-typical-species-of-anas-fig-6-the-trachea-of-the-hybrid-with-platyrhynchos-is-not-different-in-size-from-the-parents-but-the-trac-image233954941.html Tufted Duck Tufted Duckhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/tufted-duck-image274490665.html zoology / animals, textbooks, 'Historia animalium', by Conrad Gessner, Zurich, Switzerland, 1551 - 1558, above: tufted duck (Aythya fuligula), head, below: probably northern shoveler (Anas clypeata), head, woodcut, zoology / animals, textbooks, 'Historia animalium', by Conrad Gessner, Zurich, Switzerland, 1551 - 1558, above: tufted duck (Aythya fuligula), head, below: probably northern shoveler (Anas clypeata), head, woodcut,https://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-zoology-animals-textbooks-historia-animalium-by-conrad-gessner-zurich-23534798.html tufted duck (female) - swimming / Aythya fuligula tufted duck (female) - swimming / Aythya fuligulahttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/tufted-duck-female-swimming-aythya-fuligula-image3015725.html bittern bitternhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/bittern-image274488320.html zoology / animals, textbooks, 'Historia animalium', by Conrad Gessner, Zurich, Switzerland, 1551 - 1558, above: tufted duck (Aythya fuligula), head, below: probably northern shoveler (Anas clypeata), head, woodcut, zoology / animals, textbooks, 'Historia animalium', by Conrad Gessner, Zurich, Switzerland, 1551 - 1558, above: tufted duck (Aythya fuligula), head, below: probably northern shoveler (Anas clypeata), head, woodcut,https://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-zoology-animals-textbooks-historia-animalium-by-conrad-gessner-zurich-20216122.html tufted duck (female) - swimming / Aythya fuligula tufted duck (female) - swimming / Aythya fuligulahttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/tufted-duck-female-swimming-aythya-fuligula-image280393267.html bittern bitternhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/bittern-image274488923.html Reiherente Tufted Duck Germany Europe Reiherente Tufted Duck Germany Europehttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-reiherente-tufted-duck-germany-europe-17301540.html tufted duck (male) - swimming / Aythya fuligula tufted duck (male) - swimming / Aythya fuligulahttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/tufted-duck-male-swimming-aythya-fuligula-image3015727.html bittern bitternhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/bittern-image274489290.html Kolbenente Red crested Pochard Netta rufina Kolbenente Red crested Pochard Netta rufinahttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-kolbenente-red-crested-pochard-netta-rufina-21636323.html tufted duck (male) - swimming / Aythya fuligula tufted duck (male) - swimming / Aythya fuligulahttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/tufted-duck-male-swimming-aythya-fuligula-image280111153.html Tufted Duck Tufted Duckhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/tufted-duck-image274490288.html Badende Tafelente Muenchen Deutschland Tafelente Aythya ferina Common Pochard europe europa Badende Tafelente Muenchen Deutschland Tafelente Aythya ferina Common Pochard europe europahttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-badende-tafelente-muenchen-deutschland-tafelente-aythya-ferina-common-11807108.html Tufted Duck Tufted Duckhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/tufted-duck-image274482921.html Pochard - female - swimming / Aythya ferina Pochard - female - swimming / Aythya ferinahttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/pochard-female-swimming-aythya-ferina-image2117803.html Tufted Duck Tufted Duckhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/tufted-duck-image274185137.html Reiherente Tufted Duck Aythya fuligula Reiherente Tufted Duck Aythya fuligulahttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-reiherente-tufted-duck-aythya-fuligula-19398796.html Pochard - 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