2013 Science Chapter 4
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Name 5 characteristics for Birds?
- 1. Adaptations for flight
- 2. Obtaining oxygen
- 3. Obtaining food
- 4. Keeping conditions stable
- 5. reproducing & caring for young
Define a bird
A bird is an endothermic vertebrae that has feathers & a four chambered heart.
Name 4 reasons Birds bodies are adapted for flight
- 1. Hollow bones
- 2. Bones of a birds forelimb forms wings
- 3. Large chest bones that move the wings
- 4. Feathers
Name 2 kinds of feathers?
Define Contour feathers
Large feathers that give shape to a birds body.
Long contour feathers that extend beyond the body are called?
2 ways Flight contour feathers help the bird
Balance & steer
Contour feathers are made up of 2 things
- A central shaft
- Many hairlike projections
Hairlike projections are called
What holds the barbs in place?
4 words that describe down feathers.
Down feathers keep the bird
Where can you find down feathers?
- Right next to the birds skin
- At the base of the contour feathers
Flying uses a lot of
Cells must obtain lots of ???? To release the energy in food
Two ways birds get oxygen into their bodies & cells
- Air sacs
- Circulatory system
The air sac system connects to the
The air sac enables birds to do what
To get more Oxygen from each breath of air than other other animals can
What is the advantage of a four chamber heart over a 3 chambered heart
The oxygen rich blood does not mix with the poor blood therefore blood carried to the cells of the body has plenty of oxygen
To capture grip and handle food birds mainly use their
Bills or beaks
A Eagles beak acts like a blank contrasted to a Ducksbill that acts like a. Blank blank
What does the crop do
Stores the food
What does that gizzard do
Squeezes & grinds the partially digested food
DoesDoes the gizzard contain stones sometimes?
Yes to help grind the food
Do birds have internal or external fertilization
Internal like reptiles
Bird eggs will only develop at what temperature
Close to the body temperature of the parent bird
What are the most diverse land dwelling vertebrate
Name three characteristics that birds are adapted for living in diverse environments
- 1. Shapes of their legs
- 2. Bill shapes of their bills/beaks
- 3. Shapes of claw
Birds are some of the chief predators of what animals name two
Pests & rodents
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