Count the eggs first, if there is 4 or more consider cooking an omelette. If it's less than 4, i recommend scrambled eggs.
Probably leave it alone. If you did touch it the mother might never comeback.
Help it but be careful because if you touch it it can also become attracted to humans to much.
Fright, short trip for food, nest of eggs not hatching and the bird will give up.
There is an old myth that handling bird eggs will cause the mother and father bird to reject them. This is not true, at all. As a matter of fact, if you find sparrow eggs and the nest has been destroyed, you could make a new nest and put the eggs in it, and the mother and father birds will be just fine with that.
You should NEVER touch a bird's nest, because the nest has bird scent all over it and if a human hand or human scent comes in contact with it, the birds will sense that and never return to the nest even if the eggs or babies are in it.
tertiary consumer
It's called a cage.
Canaries do knock eggs out of their nest. This is done sometimes if the bird knows the egg is not thriving. Eggs may be knocked out of nest by predators to the canary bird also.
The cow bird. The cow bird lays it's eggs in another birds nest, and then when the cow bird's eggs begin to hatch, the baby cow birds will push the other birds out of the nest.
the cowbird
example: The bird sat on the nest to warm her eggs.
If a brooding bird is disturbed, it may abandon the nest, and the eggs will not hatch.
If the nest has eggs in it you might harm the chicks.
Cuckoos do this.
no because the bird will not find his/her eggs
Example: the bird sat on the nest to keep her eggs warm.
This means the nest of eggs. Clutch of eggs.
Fright, short trip for food, nest of eggs not hatching and the bird will give up.
I believe the cuckoo does this