What is it about Spring and fall makes it prime sighting time?

I have notice that Bigfoot sighting where more in spring in fall. Now my questions are
1. Does Bigfoot hibernate for the winter?, and that is why sighting are more at them points in the year seen more.
2. With the amount of hair that a Bigfoot has does the heat make it unbearable for him?
3. Is food sources better to be found?

My thoughts on this
1. If thought about it would make sense seeing how they have to eat before sleeping for three to four month, they would have to stock there body for that. When they wake up they would have to eat to make up for what was used while sleeping. 
2. Humans with longer hair are seem to be hotter when there hair is let down, then pulled up. Maybe the hair from a Bigfoot does not act as a dog as more like a human. Animal hair acts as a protector against the sun and different weather, unlike humans which it only acts against us.
3. Like my number one question most animals are not active in the winter months, and even go in a hibernate. So the food source would be hard to come by. Not having animal sources or plants that are just out and about in the winter.


Please post your thoughts and question let me know what you think. Thank You