My recent investment into 1 Avicularia versicolor (Antilles Pinktoe) and 1 Brachypelma albopilosum (Curly Hair) has really paid off! My A. versicolor (S.B.) is my first arboreal species. She wasted no time in building a tunnel web up the corner and then a hammock type web over from the top. She has been interesting to watch, though not otherwise very active.
Then there is the B. albopilosum (Señor Fuzzy Britches)! He originally didn't seem to be changing his new habitat at all. Then he) was slowly moving dirt from one end of his Kritter Keeper to the other. Eventually he had a mound almost to the top of one end of the cage and one opposite corner was dug out all the way to the bottom. Now he has begun to dig a hole in the bottom of the mound and some of that dirt is being carried into the original empty corner. It is fascinating to watch! I love that while he is burrowing, he is doing it where we can still watch! Earlier he was making some sort of squeaking noise... I think it is the sound of his feet sliding against the plastic. It has been cool to watch dirt being carried in the chelicerae!
Note: These babies are all juveniles, so the he/she is really just a guess at this point. We think of S.B. as a girl and SFBritches as a boy.