I’ve been thinking of how one could make a friendly mammal watching competition were you have to watch in the country you live in that is relativly fair no matter were you live and making the results between countries comparable. It can’t be how many species you see as the diversity is much higher in eg. Kenya than Denmark. Making it a percentage might not be the best way either as if you live in a small country with few species reaching a high percentage is much easier than in a large country with many widespread species. Does any of you clever people in here have a good idea???