Gouldian finch Breeding (3)

These are the parents
Black-headed White-breasted Blue-backed Gouldian Finch hen &
Red-headed White-breasted Silver-backed Gouldian Finch cock.
 

Out of 5 eggs, 3 are hatched.
 

They vary in sizes.
 

As usual, Silver ones are small and Blue ones are big.
 

The silver is a female.
 

They leave the nest
 

Out of 6 eggs, 4 are hatched.
 

Surely, the silver gouldian finch is smaller.
 

They have grown so much.
The right gouldian finch looks like a silver pied.