What is the plural possessive form for birds?

Answer 1

The possessive form of the noun bird is bird's.

example: We sat quietly and listened to a bird's call.

Answer 2

The possessive form of the plural noun birds is birds'.

example: We watched the birds' formation pass overhead.

Answer 3

The possessive form is the bird's wings.

Answer 4

The possessive form is the vultures' wings.

Answer 5

The vulgurs’ wings

Answer 6

bird's