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Published byPriscilla Joseph Modified over 8 years ago
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This module covers the following 6 orders: GALLIFORMES — Fowl-like birds ANSERIFORMES — Waterfowl & Screamers
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CHICKENS AND RELATIVES
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Range: worldwide Morphology/ecology: short-beaked, terrestrial birds with short, rounded wings Behavior: most lay large clutches, precocial chicks; polygyny and lekking (group male display areas) is common Taxonomic notes: quite primitive unspecialized birds near the base of the tree of modern birds; this is group that Ken Dial used to test his new idea on the origin of flight Important families: *Phasianidae: pheasants, grouse, turkeys, peacocks *Odontophoridae: New world quails *Megapodidae: megapods or moundbuilders; eggs are buried and incubated by heat generated from composting (Australia and southern Asia) *ORDER GALLIFORMES — Fowl-like birds — 5 families; 258 species
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Ocellated Turkey, Guatemala Family Phasianidae: pheasants, turkeys & grouse -Some species highly cryptic, others highly elaborate males -Lekking mating system common -Chicks highly precocial
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- Lekking: Males defend display territories that do not have any resources. Females cruise through to make their choice. Sharp-tailed grouse, British Columbia
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Rock Ptarmigan, Canadian arctic
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Rock Ptarmigan live in treeless tundra — plumage color matters for crypsis
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molt has to happen very quickly as habitat changes color with snow melt
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female half way through molt
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new female breeding plumage that is exquisitely camouflaged against tundra
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rock ptarmigan nest with typical clutch size
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Photo by Mike Danziger Family Odontophoridae: New World quails California Quail - California quail = our state bird -Several species have crests, called plumes or ‘topknots’ -After precocial young hatch, often form social groups called coveys
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Australian Brush-Turkey Family Megapodidae: moundbuilders -Australian family -only birds that do not use body heat to incubate their eggs
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Malleefowl mound where eggs are incubated Unique incubation strategies in megapodes: -Compost -Geothermal
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WATERFOWL Ruddy Duck, B.C.
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Range: worldwide Morphology/ecology: ancient group of swimming waterbirds; bill broad, flattened, lamellate or slender, serrate (mergansers); feet palmate; variety of foraging modes (filter feeders, fish eaters, shellfish eaters) Behavior: large clutches of unspotted eggs, only females incubate; precocial chicks leave nest upon hatching; brood parasitism within and between species is very widespread Other notes: Screamers have two knife-like spurs on leading edge of each wing, also very extensive air sacs that crackle when pressed, soar high into air and call (hence name) Important families: *Anatidae: swans, geese, ducks Anhimidae: screamers (South America) *ORDER ANSERIFORMES — Waterfowl & Screamers — 2 families; 161 species
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Mallard, Santa Cruz Family Anatidae: ducks, geese & swans
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Common Eider, Quebec
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Common Eider nest
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Barrow ’ s Goldeneye, B.C.
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Adoption in Barrow ’ s Goldeneye
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Interspecific nest parasitism Ruddy Duck Redhead
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Black-headed Duck, Argentina
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Black-headed Duckling in nest of Brown-hooded Gull
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Magpie Geese, Australia
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Southern Screamer, Argentina Family Anhimidae: screamers
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photo Mo Hassan
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