If you live in Europe, you can find almost any statistic you like about the birds in the environment.
Recently scientists at the institute have compiled some of the monitoring data collected from the Amurum nature reserve over 18 years. Amurum is a small (about 300 hectare) piece of wooded savannah surrounded by farmland where the institute was built.
I don’t think they are using iNat - but we have observers and identifiers for iNat’s Nigerian birds (Jos North location)