Greedy pigeons

I have the common problem of pigeons eating the seed etc that is destined for the smaller birds in my garden. I have unsuccessfully tried to protect the feeders. I found a post called Greedy Pigeons dating from 2010 but the link in it with the alleged solution takes me to the Osprey watch at Loch Garten. Its here: - http://www.rspb.org.uk/community/forums/p/14666/100451.aspx#100451 Here is the original posting: http://www.rspb.org.uk/community/wildlife/f/901/t/14839.aspx Can anyone send me to the original link, please? Thanks Stephen