Clutch
This clutch has ten eggs. A set of eggs laid at the same time.
Incubating
Keeping the eggs warm. If not they won’t hatch.
Hatching
When the baby birds break out of their eggs.
Brooding
When the mother bird keeps the baby birds warm.
Brood
Chicks hatched from one lot of eggs.
Roosting
When a bird tucks its head under its wing and sleeps.
Faecal sac
A faecal sac is the chick’s waste. The adults take it out of the nest to keep it clean.
Fledgling
A bird that has just learnt to fly and has left the nest.