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It depends upon the species.
Finches are very quick-growing; they begin to get feathers within about a two weeks, and will fledge shortly thereafter.
Ravens, martins, and the larger parrots are very slow-growing; they are unfeathered for most of a month, and take between two and four months to fledge.
Most altricial birds fall somewhere in between those two extremes.
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Which came first fish or amphibians or birds or mammals?
Dinosaurs emerged first. Some dinosaurs were birds, but they didn't come until later.
When did the duck first appear on earth?
The first birds are thought to have appeared in the late Jurassic period, between 150 and 200 million years ago. Modern duck species have traits that are closer to some theropods (dinosaurs) than are most land-based birds.
When did the first hacker appear?
1970s
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Chordate pharyngeal slits appear to have functioned first as suspension-feeding devices.
When did the cardinal birds first show up?
well the birds first showed up when god helped man create guns so that man could be beast and hunt and kill birds and make meat for mans family!
What period did the first birds appear?
In the beginning of the world they were flightiness.
What year did birds appear on earth?
they were first noticed millions of years ago during the dinosaur time
When did first birds appear?
Middle to late cretacious. But some dinosaurs e.g raptors, and pterosaurs were there even earlier.
Is there going to be The Birds remake?
A remake was considered in 2007 but nothing was ever finalized, so no, it does not appear there will ever be a remake of The Birds.
What is significant about the birds first flight?
what is the significant of birds first flight
How do you get past level 1-20 in Angry Birds?
You launch the birds, and kill the pigs.REMEBER!- If you tap the yellow birds they go faster and cause more distruction.Also If you tap the blue birds three of them appear.
When did the first birds appear?
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When did the cycad first appear?
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What year did the key first appear?
What year did the key first appear?
Are birds and mammals decended from a common ancestor?
Mammals came before birds. The first mammals lived in the Triassic and the first birds lived in the Jurassic.
