Larger than our own Swifts that return from Africa every summer the Alpine Swift is a scarce visitor to our shores. Apart from their size they are distinguishable by their slower flight and white breast.
They are appearing everywhere in the last week - even my former homeplace: http://www.irishbirding.com/birds/web/D ... Swift.html but none in Enniscorthy. I went out looking for them yesterday but they are like the pandas in the KitKat Ad.