Aves Flashcards
(19 cards)
What does Aves mean?
bird
What is the body like?
fusiform w/ long neck for balancing & gathering food
What are the limbs like? what are adapted for perching, walking, & swimming
-paired limbs
-forelimbs adapted for flying
-posterior pair adapted for perching
What glands do they have at the root of their tail to take care of their feather? feather?
-all have feathers
-oil/preen glands
-no sweat glands
What is the skeleton like?
-hollow skeleton and sternum w/ keel or reduced w/ no keel
What kind of birds don’t have a keel?
flightless birds
What is the circulatory system like?
4 chambered heart
How do they manage their temperature?
Endothermic
What is the respiration like?
by slightly expansible lungs
Do they have a bladder & what is urine like?
-no bladder
-semisolid urine
What is the sex ?
-sexes seperat
-female w/ left ovary & oviduct only
What is fertilization like?
-internal fertilization
-amniotic egg
What is fertilization like?
-internal fertilization w/ direct development
-amniotic egg
What is incubation like?
external incubation
What is precocial
young active at hatching
What is altricial
young helpless or naked
what is the word for when the young is active at hatching
precocial
What is the word for when the young helpless or naked?
altricial
What reproductive organs do females lack?
ovary
