Longest incubation

Longest incubation
Leipoa ocellata
01 January 0001
The longest incubation was recorded in the case of an egg of the mallee fowl (Leipoa ocellata), Australia, which took 90 days to hatch, compared with its normal 62 days. A very small number of birds incubate their eggs for longer than 70 days: the wandering albatross (Diomedea exulans), for 75–82 days; the royal albatross (D. epomophora), for 75–81 days; and the kiwis (family Apterygidae), for 71–84 days.