. I have made a discovery which, if it was scientific I would be hailed genius. Its classification of theory hypothesis or law would be without a doubt, a law.
Area x velocity x distance = the sum of flies that hit a windscreen at a given time of day with similar sunshine & temperatures during same summer month.
Sweden has less birds than other Scandinavian countries, those being Denmark Norway and Finland and that despite 70% of the land forested and devoid of pest/herb/fungicides.
Ps
I am currently in the process of trying to analyze my findings to discover the reason for this very strange intriguing phenomenon.