kuş

/ quʃ /

Cases

SingularPluralWhen to use it
nominative kuş the bird kuşla the birds the plain dictionary form — the doer of the sentence
genitive kuşnu the bird's kuşlanı the birds' the owner — whose it is
accusative kuşnu the bird (as the object) kuşlanı the birds (as the object) a specific, known object — whom or what
dative kuşha to the bird kuşlağa to the birds direction or recipient — to where, to whom
locative kuşda at / in the bird kuşlada at / in the birds where it is; also having — mende bar, "I have it"
ablative kuşdan from the bird kuşladan from the birds where it comes from; also "than" when comparing

The endings are the same ones the pronouns wear — that page explains when each case is used.

With an owner

One ownedSeveral owned
my kuşum my bird kuşlarım my birds
your kuşung your bird kuşlarıng your birds
his / her kuşu his / her bird kuşları his / her birds
our kuşubuz our bird kuşlarıbız our birds
you all's kuşuğuz you all's bird kuşlarığız you all's birds
their kuşları their bird kuşları their birds

The overlap in the last rows is real, not a mistake: kuşları can mean "his / her birds", "their bird", or "their birds" — context decides.