Letter Gang

There's a storm in the jungle. All sorts of things are flying around.
A little monkey finds a bunch of strange shapes in his tree.
"Those are letters," the clever parrot knows. "Someone must have lost them."
Together, the monkey and the parrot go in search of animals that have lost their letter. They meet, among others, a tiger, a langur, a mouse and an alvis... Can you help the animals find the letter that
belongs to them?