This an extract from the General licence issued by DEFRA
The terms and conditions of the general licence are:
* only crow, jackdaw, jay*, magpie and rook may be kept or confined in a Larsen cage trap as a decoy.
* any bird other than crow, jackdaw, jay*, magpie and rook, which may be caught in the Larsen cage trap, must be released immediately on being found.
* each Larsen cage trap, which contains a live decoy bird must be inspected on at least one occasion in any 24 hour period. Where Larsen cage traps are left in the open but not in use, they must be rendered incapable of holding or catching birds.
* the decoy bird must be provided with adequate food, water, shelter and a perch for the entire period which it is used. The decoy bird must be removed when the trap is not in use.
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