yeah probably the late summer and all.i have had several tarantulas and i have only observed this behaviour when i had adopted a male rose hair that i had to keep next to my original female rose hair...there was much excited activity but at the time i had little experience with spiders and had no acces to fruit flies and other small foods for spidelings..but now that has changed and i have seen these baboons sell...not for sale..30-40 bucks each..and it isnt all profit that is just incentive..anyhow yeah its probably temp,humidity,or photoperiod related..wich translates to weather.