What supplements do you give your birds?None, since I do not believe in them. Leo Heremans was a top racer. He does not believe in them either. And for long distance? In my opinion they are useless as well. A champion like Verkerk has tried out everything. But never ever did he notice a boost in condition.I must admit though, some real good long distance racers advocate for oil and they administer ‘oil containing stuff’ like peanuts the last 2 days before basketing.Perhaps (!) pigeons may benefit from oil indeed. But certainly not if the birds get that just one or two days before basketing. You should start giving it at least one week before the race. Giving the birds extra energy in just one or two days is an illusion.