MI Trapping -
Are they strictly open roosting, meaning no inside entry behind logs, soffit or other?
If so, mechanically altering the area so they can't roost there will resolve it.
Definitely no to the "capture/relocate," but if open free roosting like that, and you can see
that you have no females with pups at all (we still even in the desert here have young non volant (non flying)
pups though some are grown and out hunting already in other species or areas.
There are threads on here about making roosting areas on exteriors to where they are too
slick, you can also screen out and area with appropriate sized screen so it doesn't turn into a capture net
that snags them.
Just a quick note, feel free to PM, be glad to help you with advice on that one, I'm sure others will chime in.
There are some quality bat excluders in your state, you probably know some you could holler at and visit about
this case, I never feel like I can't learn something technique, or otherwise from someone who may have way more time
in on a species than I do, or certain type of exclusion, etc...
A new paper that just came out is showing summer transmission is able to happen for white-nose syndrome, just another
reason to not handle or capture the bat colony, along with many other reasons. We get tons of porch roosting bats here
that are night roosts only but folks get buildup of guano and urine streaking on exteriors, so I do almost as much of that
type of roost as the kind in attics or behind exteriors.
We don't start exclusion till August 15 here when our maternity season for flying pups at least is complete. Prior to that
bad things happen to bats and clients if we try to exclude or someone else does which ends with a call to us or others to fix
a DIY job or a job from someone who decided there wasn't a concern for maternity season issues.
ps. more description of the issue at hand would be good for those reading to comment better for you.