mate i wouldnt offer to pay anything,and i personly wouldnt write to them either,the best way is to see them face to face,9 out of 10 times the farmer will be busy doing somthing,offer to help him and talk to the bloke,
i read something like this a while ago on one of the forums.
go to the farmers house and knock the door with telemetry in hand,say your hawk has dissapeared across his land while chasing a crow and does he mind you going to look for it.you will be suprised how intrested he is in the hawk, telemetrty etc,when he says yes, off you go.we all know you havent got a bird yet but h