The possessive form of the plural noun thrushes is thrushes'.
example: We saw many thrushes' tracks in the snow where the wind had scattered seeds.
All English plural nouns ending in s form the possessive by adding an apostrophe after the ending s.
The possessive form of the singular noun thrush is thrush's.
Example: There's a thrush's next right outside my window.
Thrush, the hoof disease, doesn't have a plural form. It's just "thrush."
The plural of thrush is thrushes.
THRUSHEss
Thrush's
The possessive form is Amos's.
The singular form is goose; the singular possessive form is goose's.The plural form is geese; the plural possessive form is geese's.
Quantum is singular, not singular possessive. The singular possessive form is quantum's.
The singular possessive form is week's.
The singular possessive form is contralto's.
The singular possessive form is aircraft's.
The singular possessive form is frontiersman's.
The singular possessive form is speculum's.
The singular possessive form is herd's.
The singular possessive form is heart's; the plural possessive form is hearts'.
The singular form for the noun families is family. The singular possessive form is family's.
The singular possessive form of wolves is wolf's.