Birds 4 Flashcards
1
Q
Define social monogamy.
A
One male and one female cooperate to raise a brood of young.
2
Q
Define polygyny.
A
Male breeds with more than one female.
3
Q
Define polyandry.
A
Female abandons eggs to breed with several males; incubation and parental care is left to male. Females are more colourful than males - reversed sexual selection.
4
Q
Define lekking.
A
Cluster of males to attack females, males provide nothing but genes.
5
Q
What are the sex chromosomes of birds?
A
ZW/WW = female/male.
6
Q
Describe reproduction and egg development in birds.
A
- Internal fertilisation
- Amniote egg
- Strictly oviparous.
7
Q
What are megapodes?
A
The only group of birds which do not incubate their eggs.
