A person is not guilty of an offence under this Act by reason only of—
(a)taking or attempting to take a badger which has been disabled otherwise than by his[
F1 unlawful ] act and is taken or to be taken solely for the purpose of tending it[
F2 and releasing it when no longer disabled ];
(b)killing or attempting to kill a badger which [
F3appears to be so seriously injured or in such a condition that to kill it would be an act of mercy][
F3 has been so seriously disabled otherwise than by his unlawful act that there was no reasonable chance of it recovering ];
(c)unavoidably killing or injuring a badger as an incidental result of a lawful action;
(d)doing anything which is authorised under the
M1Animals (Scientific Procedures) Act 1986.