I am half-joking because I know if I go to a different area I will spot other birds. But also I went to a place where there are (in theory) roughly 75 bird species inhabiting the space this month, and it’s clear that the vast majority of animals you see there are from the same species. You need to be consistent, persistent, and diligent to spot something “rare”. But that’s the joy of it, so it’s all good!