Pheasant
Pheasants aren't native to Ireland, or even to the UK, having been introduced as game birds by the Normans there. It's estimated they have been in Ireland from at least the 1500s, and they are very numerous – certainly not in danger, although they are hunted.
Widespread in Ireland but scarce or absent from parts of the west coast.
Image 1 (Male)
Image 2 (Female)