Ever wonder why we eat 3 meals a day? Is it a social convention or a biological one? We have bird feeders and a birdbath outside our kitchen window. I noticed that the birds show up around 7am and then again between 11:30 and noon, finally between 4:30pm and 5:00pm. They come in eat and bath for maybe 10 minutes or so and then leave. So 3 times a day and about the same time we eat. I notice that our outdoor cat eats on a similar schedule. Maybe there is a biological component to when we eat. | 
3 meals a day, common for us and birds
