Wood Pigeon Decoying On A Foggy Morning

I was asked by a local farmer if i could help discourage the wood pigeons and corvids from attacking the barley as he was still in the middle of cutting his crop and the birds had descended on it in droves.
This is all done on farm land that i have permission to do so on with legally held air rifles and is done in a legal and humane manner as not to prolong or glorify the death of the birds.
This can legally be done through the Department Of Agriculture, Environment And Rural Affairs Wildlife (Northern Ireland) Order 1985 (As Amended) Licence.
This Licence hereby authorises for the purpose of preventing the spread of disease and preventing serious damage to livestock, foodstuffs for livestock, crops, vegetables, fruit, growing timber and fisheries ANY AUTHORISED PERSON to kill or take any of the following birds:-
Crow, Jackdaw, Magpie, Pigeon (Wood), Pigeon (Feral), Rook

Range Finder Bushnell Scout 1000
Rifle BSA Super10 John Bowkett Blueprinted .22cal 15ft/lb
Scope Nikko Stirling Targetmaster 4-16x44 LRX
Pellets JSB Diabolo Exact 15.9 Grain
Tactacam Solo and FTS unit
Equifix Shooting Bags Dutch Bag
The Double Bush chair hide