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Ornithology > Ornithology > Flashcards

Ornithology Flashcards

0
Q

Alan feduccia

A

Didn’t believe in BMT hypothesis

Thought birds are from archosaurs

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1
Q

BMT hypothesis

A

Birds are maniraptoran theropods

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2
Q

Dr. Jay Melosh

A

Kt boundary

Incineration of dinosaurs within hours

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3
Q

Importance of deinonychus

A

Flexible hallux

Flexible carpal bones

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4
Q

Precocial

A

Come out of egg good

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5
Q

Altricial

A

Need help out of egg

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6
Q

Ornithischian ancestors

A

Pterosaurs
Theropods
Archosaurs- Feduccia

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7
Q

Ornithischians vs Saurischians

A

Ornithischians have digits 3,4,5

Saurischians have digits 1,2,3

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8
Q

Microraptor did what

A

Glided from trees

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9
Q

Ratite

A

Flightless birds
Smaller pectoral muscles
No uropygial gland

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10
Q

Raptorial lifestyle has evolved

A

Multiple times

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11
Q

Feather mass compared to skeletal mass

A

Feathers mass is 2-3x more than skeletal

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12
Q

Feather composition

A

91% protein (keratin)
8% water
1% fat

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13
Q

Functions of feathers

A 
Insulation 
Camouflage 
Aerodynamics
Protection
Sexual selection
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14
Q

Crypticity

A

Camouflage

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15
Q

Secondary remige feathers

A

Attached to forearm (ulna)

Symmetrical

16
Q

Primary feathers

A

Asymmetrical

Attached to hand

17
Q

Coverts

A

“Cover” other feathers

Plumaceous and pennaceous

18
Q

Down feathers

A

Short

Only plumaceous

19
Q

Bristle and filoplumes

A

On noses and eyes of woodpeckers and insectivores

20
Q

Retrices

A

Tail feathers

Rudder and lift

21
Q

Melanins

A

Provide dark coloration in feathers
Blacks browns dark reds
Give feathers longevity
Temperature regulation

22
Q

Glogers rule

A

Dark colors in humid tropical regions

23
Q

Carotenoids

A

Derived from diet

Yellows red oranges

24
Q

Psittocorfulvins

A

Red pigments

Endogenous- generated inside

25
Q

Structural colors like white blue and some greens

A

Formed by air spaces and melanin

26
Q

Iridescence

A

Scattering of light

Depends on angle

27
Q

Calamus

A

Base of rachis

28
Q

Pulp caps

A

Lines of the rachis

29
Q

Umbellicus

A

Bottom of rachis

30
Q

Protective care for feathers

A 
Preening
Oil secretion uropygial gland 
Dust and water baths 
Anting
Sunbathing
31
Q

Induced drag

A

Pull from gravity

Faster you go the less induced drag

32
Q

Profile drag

A

Air molecule drag, faster you go the more profile drag

Ornithology (1 decks)

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