The avian reproductive system Flashcards
1
Q
Name and describe the 6 parts of an avian egg
A
• Shell
• Inner/outer shell membranes
• Albumen - egg white
• Yolk
• Chalaza - spiraly things
• Air cell - pocket at bottom of egg
2
Q
Name 3 things that eggs provide
A
• Nourishment to offspring
• Suitable environment for development
• Protection
3
Q
Where is an egg formed?
A
Oviduct
4
Q
Name the incubation period for a pheasant
A
23/24 days
5
Q
Name the incubation period for a duck
A
28 days
6
Q
Name the incubation period for a chicken
A
21 days
7
Q
Name the incubation period for a barn owl
A
31 days
8
Q
What is a photoperiod?
A
The availability of light
9
Q
Give 4 reasons why each birds penis is the way it is
A
• Genes
• Mutations passed down
• Evolved for each bird’s lifestyle
• Large male chromosomes
10
Q
What is mating between two birds called?
A
The cloacal kiss
