Put it in a covered box for a while. The darkness will calm it down a bit. Then you can try leaving it alone with bird food and water. Otherwise, call the RSPCA (are you in the UK?) and they'll tell you to take it to a local vet on the RSPCA's behalf/free of charge.
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Tue 23 Apr 2013, 15:46,
archived)
and other sweeping generalisations...
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Tue 23 Apr 2013, 16:38,
archived)
hope your pidge/dove gets better. We have a wood pigeon who visits here quite often (yes, I know it's an agricultural pest but the cats have killed everything else round here), and he seems to like the corn-type bird feed the most :)
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Tue 23 Apr 2013, 20:18,
archived)