Why does a chicken lay an egg?

eggs - chicken egg
@aslygirl (531)
Philippines
March 7, 2007 4:10am CST
hmmm I wonder why?
1 person likes this
1 response
g_aileen09
@g_aileen09 (1354)
• Philippines
7 Mar 07
Reptiles lay eggs, and birds, chickens included, are believed to be descendants of reptiles a form of winged dinosaurs that have mutated over the centuries.
1 person likes this