Q16 - Reproduction in Birds II Flashcards
1
Q
What is the main source of heat for a developing bird egg? How does this occur?
A
Brooding parent provides heat through direct contact
2
Q
What is a brood patch in birds? What does this do?
A
A ventral patch of skin with no feathers and lots of blood vessels - improves efficiency of heat provision by covering the dorsal egg surface
3
Q
What are some negative consequences of the brood patch in birds?
A
They block some gas exchange in the egg
4
Q
What behaviours are displayed to maintain egg temperature in birds?
A
Alter time spent on eggs depending on ambient temperature, egg turning
5
Q
What is egg turning in birds?
A
Eggs are rotated around the nest to get an even temperature balance - those on the outside are moved to the inside
