4steps from the big bang
49things can go into it
birds
NaturalLiving
Birds are living dinosaurs. A chicken is more closely related to T. rex than a crocodile is.
First appearedAbout 150 million years ago
Made Of
Everything is made of something.← What it takes
What it leads to →
Evolved from
Evolved into
Birds are living dinosaurs. A chicken is more closely related to T. rex than a crocodile is.
From the big bang to birds
The most direct chain from the start of the universe, following what things are made from and, for living things, what they evolved from. Each step shows when it first appeared.
big bang13.8 bn yrs ago
Hhydrogen13.8 bn yrs ago
water4.4 bn yrs ago
chickenc. 3,500 yrs ago
birdsc. 150 m yrs ago