As i understand it, many of the pest birds in the US are from over here in the old world, making me think what people do here, and loose here.
The only pests i hear off are rats. the racoon dog,and a species of crawfish, i cant say i heard of any pest bird that are legal to shoot for that reason.
Mentions in this regard:
The wolf, have been a native but was wiped out decades ago, but they have now found their way back to Denmark. It is not considered a pest as such, but already some have been shot ( even on camera ) or gone mysterious missing.They are considered a endangered species here and are illegal to shoot.
Wild bore, was also natural here but was wiped long ago too, they would like to get in here too, but are a massive danger to the large Danish pig industry ( at least 2 pigs here for every of the just shy of 6 million Danes ) and we cant have anything ruin Quality Danish bacon,,,,, that would be a disaster as only a man that eat bacon can be trusted.
So a fence have been put up along the German / Danish border,,,,,,, this is not outright popular, some deer have been entangled in it unfortunately.
Dairy farms here are by design much like in the US, so i recon birds can and will do the same here.
Then there is a host of unwanted beetles and what not from the south getting up here as temperatures rise, and while i can hit a fly at 50 yards then they are damn hard to spot in the wild at that distance.