Solution for 12 July cryptic crossword clue

Squeal about duck theft (8)

Solution - Stealing

The word "about" is the hint that one word is placed around another to make up the solution.  So something meaning "squeal" is around something meaning "duck".  And that makes up a word that means "theft"

Stealing = theft

Squeal = sing as in the nark sang like a canary, or squealed on someone

Teal = a sort of duck

S + teal + ing = the solution

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