The kiwi lays the largest egg in proportion to its body. The kiwi's egg is six times larger than the egg of an equivalent sized bird. This is because the egg has an incubation period of 70-80 days, and the chick is mature and fully developed when it hatches.
The Kiwi.
kiwi
The largest bird is the ostrich, whose eggs weigh more than three pounds. However, in proportion to its size, the kiwi bird lays the biggest eggs for its body size. The kiwi is about the size of a chicken and its egg is almost as big as the egg of an emu, a much larger bird than the kiwi.
The Kiwi Bird: A small chicken size bird which has a long beak and lays the largest egg to body size ratio in the world.
Clutch size.
ostrich in general but compared to body size kiwi lays the largest egg. octopus is the largest sea animal that lays the largest egg.
An Ostrich. Im not saying an ostrich is dumb it just lays a really big egg i mean a REALLY big egg Most birds lay eggs bigger than their brains; compare the size of a chicken egg with the head of a chicken. The bird that lays the largest egg in comparison to it's body size is the Kiwi of New Zealand.
Ostrich The egg is about 8 in tall and weighs 3 lb
Dromiceiidae: The Emu. Emu and cassowary eggs both vie for the title of the second largest egg, second only to the ostrich. Emu and cassowary eggs are basically the same size.
Hummingbird
the humming bird its egg is the size of a jelly bean
either The ruby throated hummingbird or vervain hummingbird (Mellisuga minima)
The Mute Swan, including size and wingspan.