Allow Zero Historical Bird Count through App

Not sure if this is a feature request of bug, but recording a zero bird count is important data yet the Historical Bird Count function on the app doesn’t have a way to record a zero bird count. Not that I have seen anyway. Perhaps the counts should default to “-” and then each count increase goes to 0, 1, 2, 3, etc. Rather than defaulting to zero. Sometimes I don’t count a species, but that doesn’t mean zero. It just might mean I don’t want to count 2000 swans today.