We all know that rush hour is a phenomenon that happens because the sun rises and sets at well defined times in the day, various television programs (such as the max-factor or some other reality-soap-drama-game-show) start and end at well defined times with well defined scripts and we all panic at well defined times.
It has set me thinking that this is probably not restricted to people, but also to animals of all types. It may even apply to ants. It's very possible that ants have a rush hour. I have spent the past week in careful study of ants nests and have not observed any rush hour. Which leads me to the logical conclusion that since there must be a rush hour they are using a mode of transport that I cannot see. The only correct inference that can be drawn is that the ants are using standard underground subway systems during their rush hour. Since I have not seen them at peak times on the subway my correct conclusion is that the ants rush hour must be on the Northern line and happens roughly between 9:23 and 10:00 in the morning and 19:45 and 20:30 in the evening. It's clear that they have very long days.
I am not sure if birds have a rush hour.