Avian Reproduction Flashcards

1
Q

2 birds who are territorial

A

robin, pheasant

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2
Q

parakeet social tendencies

A

gregarious nesting, colonial/co-operative

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3
Q

birds that produce simple nests

A

parakeet, doves

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4
Q

birds that build complex nests

A

baltimore oriole

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5
Q

photoperiod

A

hours of daylight
tend to lay eggs in the spring when days are getting longer

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6
Q

example of courtship

A

cranes do a mating dance

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7
Q

is artificial insemination common in birds?

A

yes

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8
Q

bird ovaries

A

single ovary, left side

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9
Q

ovulation

A

when ovum/yolk is released from ovary

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10
Q

5 components of the oviduct and their purpose

A

infundibulum (funnel): fertilization
magnum: adds albumin (egg whites)
isthmus: adds shell membranes
uterus/shell gland: adds shell

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11
Q

how often does ovulation occur?

A

every 24-26 hours

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12
Q

U-V junction/sperm host glands

A

holds sperm for a couple of week after mating

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13
Q

oviposition and where it occurs

A

laying the egg, from the cloaca

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14
Q

why are mammalian testes external?

A

the internal body temp is too high, will cause sterilization

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15
Q

where are birds testes?

A

paired, internal at deep body temperature

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16
Q

where is the vas deferens?

A

beside the ureter

17
Q

phallus

A

penis, reduced in birds

18
Q

2 differences between mammalian and avian male reproductive system

A

internal testes
lack of glands (prostate, seminal vesicles)

19
Q

incubator conditions acronym

A

THAT
temperature
humidity
air
turning

20
Q

temperature for artificial incubation

A

about 100 F, must be fairly constant

21
Q

humidity for artificial incubation

A

must be controlled

22
Q

gas exchange/ventilation for artificial incubation

A

need adequate oxygen and to remove co2
occurs through egg’s pores, membrane’s blood vessels

23
Q

turning for artificial incubation

A

eggs need to be turned several times a day

24
Q

candling eggs

A

shine light through egg to see embryo, ebryonic membranes

25
when is the eye formed?
24 hours
26
when does the heart begin to beat?
42 hours
27
when is the beak formed?
day 6
28
when do they begin to feather?
day 8
29
when do scales and toenails appear?
day 13
30
when and why/how does the yolk sac enter the body
day 19 sucked in through navel, then navel closes over it can live off yolk for a few days after hatching
31
how long is embryonic development
21 days
32
egg tooth
falls off 1-2 days after hatching
33
chick imprintation
won't mate/interact with other birds if they've imprinted on human caregivers now people wear crane puppets so that the chicks will imprint on cranes