Baby blackbird's are equipped to fly the nest very soon, before they can fly and gather food. They will flop out and become fledglings.
About 10 or 5 weekes
1 year
10 days
Between 10 and 19 days is commonly quoted amongst birdwatchers but eggs hatched in aviaries invariably take 14 days. While a longer incubation period for eggs laid in habitat could possibly be the result of disturbance, a shorter incubation period than 14 days is exceedingly unlikely.
It takes about 13 days after hatching before a Bluet Robin to fly from the nest. This is after the mother has left them.
blackbirds
Tawny Frogmouths fledge at 25-35 days.
Blackbirds reproduce by laying eggs.
a group of Blackbirds is called a murder
They can fly as soon as they fledge. The parents will fly and swoop with them though.
There is no specific collective noun for blackbirds but any collective noun for birds will do; for example a flight of blackbirds or a flock of blackbirds.
Blackbirds
Blackbirds symbolize misfortune