YB found dead

A local fancier went down to his loft this morning feeling pleased with himself after taking a card at the club yesterday and he found 3 Yb's dead on the floor, he said they went yesterday and there's been no sign of any of them being ill or even off colour. Any ideas ?

he should have put the birds in a freezer straight away and arranged for an autopsy to be done.
Anything else is just purely speculation.

i read that this happenened to another chap last week on another site ...sounds pretty drastic and as gaz says could be a number of things ....did he have any substances in the water on return ....my birds first drink is always glucose or honey nothing else until early evening but it sounds as though the birds were healthy as they would not have arrived from the race maybe picked something up in the basket ....were the birds that died late arrivals or did they even go to the race ,alot of facts need to be established and a post mortem is the best bet to be honest atb