The internal structure and reproduction of birds
Answers are for parents and teachers.
1
Write the order of the bird digestive tract (beak to cloaca).
Beak, gullet, crop, glandular stomach, gizzard, intestine, cloaca.
2
Why does a flying bird not get out of breath?
Air sacs drive air through the lungs with wing movement.
3
Write three nest types with examples.
Bowl – stork; hole – tit; mud – swallow.
4
Draw the parts of an egg and write each function.
Shell – protection; white – water and food; yolk – embryo food; air chamber – respiration.
5
Write 3 features birds share with reptiles.
They lay eggs; horny scales on the legs; internal fertilisation.