Thanks Christian and Francisco for the feedback. I was thinking that they may actually live within a close range of maybe 10 m perimeter. I have seen this before with Brunneria Borealis where about 20 adult (i am sure there are more) were spotted in a grassy area of 30 ft x 15 ft. BUt the ootheca we collected spread over a large area so don't think the maternal instinct is involved in returning to the same spot they hatched but rather locating a better place to lay with better chance for the ootheca to hatch.