Being a person who keeps lists a facility to create a list of seen wildlife be it Geographic, circumstances. This would include Country, County Local Patch etc. I actually note wildlife I see from aircraft [sad I know] so I miss this facitlity.
You can filter to any ancestor location as well, eg. the county/country/continent, not just the location originally recorded. It's possible the country will not show in the filter box if eg. all of your records are within a single county - in this case filtering to the county achieves the same as filtering to the country anyway.
Geographical regions are more difficult as they don't fit neatly into a hierarchy. We've got ideas on how to address this though.
Gerald Wells commented
Filtering by location is not what the majority of listers want; it is the ability to list by country that is the most important and for some to list by taxonomic geographic region e.g. Western Palearctic. In other words filtering by the most detailed descriptor is not necessarily what is required.
You can filter records entered to get lists for a location, year/month, or even by property. Is this not what you are looking for?
Filters will be arriving on the mobile apps very shortly.