This species is most frequently found in the northwest, for example around Churchill and Lough Gartan, Co. Donegal.
It is most easily spotted in the spring, around May, when the flowers are out. The creamy-white flowers are borne in rows along flower stalks about 10cm. long, and are quite obvious above the green foliage.
The dark berries or small cherries ripen in August, when the trees may be more difficult to locate, so you have to remember where you spotted them in the spring, (if you search for cherries after the 15th you may be too late!). It may be possible to mark them with a tie around the trunk.
Bird cherry is worth the effort as it is an attractive small tree with true flowers and grows willingly, preferring good soil and a sheltered site.
Treat bird cherry fruit as common wild cherry.