Nitro HV Decoying Corvids With A Yellow Bucket

I am controlling corvids on a farm to help protect the meal that's set out for the cattle to eat, as well as costing the farmer more money to feed his livestock the birds could also cause a health risk to the cattle by spreading diseases.
Magpies and crows will also take any eggs or fledglings of ground nesting birds that they find.
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, Gull (Greater Black-backed), Gull (Herring), Gull (Lesser Black-backed), Jackdaw, Magpie, Pigeon (Wood), Pigeon (Feral), Rook, Sparrow (House), Starling.
Lanber 12ga Sporter with 28" Multi Choke Barrels
12 Gauge 32 gram 6 shot