How about the more distant past? I look up Lochmaben in the Scottish Statistical Accounts; in 1845 the local minister Thomas Marjoribanks lists birds in his parish. Many are still here, sometimes under different names: white owl (our barn owl), water-ouzel (our dipper-'most destructive to the salmon fry'), golden-crested wren (goldcrest), willow or silver-wren (willow warbler and chiffchaff, lumped together as one species), white and yellow (pied and grey) wagtails. Three species Marjoribanks specifically ascribes to Elshieshields, 'missel-thrush', 'long-tailed titmouse' and jay, are still on site. Like me Marjoribanks enjoyed locating local rarities- I too have found quail, but not butcher-bird (red-backed shrike). Finches are lumped together as 'various species of linnet'; life was hard without binoculars.
What birds will be here in 2100?