vermin

I represent the london and south east rat pack. Like many other packs & syndicates around the country, we are all seeking any kind of farm, stables, pig units, poultry units and even waste centres for ratting. We all use stock trained dogs and air rifles equipped with night vision and thermal...

Wondering if any of you folk have experience of any of the 'Bird Gard' bird scarer units? I feed ad lib meal to bulls and unless I keep the shed doors closed, the place would be overrun by crows/jackdaws. Other ideas for deterrents welcome too.