Aves Flashcards
1
Q
What are feathers
A
Modified scales
2
Q
What skeletal modifications do aves have for flight
A
-Keeled sternam (in most birds)
-pneumatized bones
-rigid axial skeleton with fused vertebrae
-toothless: beak instead (keratin)
3
Q
What are parabronchi
A
Tubelike respiratory surfaces
-both anterior and posterior air sacs
4
Q
What muscles do they have for flight
A
-supracoracoideus: upstroke
-pectoralis: downstroke
5
Q
How do they navigate
A
-topograohical landmarks
-geomagnetic orientation
-celestial clues
6
Q
Aves mating systems
A
-monogomy
-polygamy
-polygyny
-polyandry
7
Q
Aves parental care
A
-Altricial young
-precocial young
