Lesson 16 Flashcards
Why do birds migrate?
Birds migrate because food is scarce, not because they cannot stand the cold
How do birds navigate during migration
Nocturnal migrators use the positioning of the moon and the stars. Diurnal migrators use the landscape, Earth’s magnetic field, and infrasound.
Why do birds establish a territory?
Territories are established to ensure that the bird has enough food
Name three kinds of nests.
minimal or ground nests, cup-shaped or saucer-shaped nests, domed nests, mud nests, or communal nests.
What are advantages to flocking?
Flocking provides protection from predators and increases the chances of catching prey.
What is the name of the #1 flyway?
Pacific Flyway
What is the name of the #2 Flyway?
Central Flyway
What is the name of the #3 Flyway?
Mississippi Flyway
What is the name of the #4 Flyway?
Atlantic Flyway
What is the egg shape of #1?
elliptical
What is the egg shape of #2?
pyriform
What is the egg shape of #3?
oval
What is the egg shape of #4?
circular
What is #1?
chalazae
What is #2?
ovum (yolk)
What is #3?
blastodisc
What is #4?
albumen (white)
What is #5?
air space
Of what material is an eggshell made?
What are the two main parts of an egg?
What are the two main parts of an egg?
The two main parts of an egg are the ovum (yolk) and albumen (white)
Why are eggs incubated?
Eggs are incubated because the developing birds within are incapable of regulating their own body temperatures
Describe a precocial chick
Precocial chicks are incubated longer. They are born with eyes open, covered in feathers, and ready to walk. They may leave the nest within hours of hatching and find their own food, but are protected by their parents.
What is the common name for this bird?
Tufted Titmouse
Name the bird that sings this song
Tufted Titmouse
