Thanks so much to CC, Kamadejo, Pumbaa, melph68, Micetta, anne marie and Morkel777 for your comments...glad you enjoy your little science lesson..ha.
I do think bats are cool and it is important to let people know about them, cause they are very misunderstood. A lot of times, that is just because people rely on incorrect info, historical myths (which are usually hysterical), and the fact that they aren't often seen owing to their nocturnal habits.
melph68...so glad you caught the calibrations on the wine glass equipment
Morkel777- thanks, this is a trip of a life time...we are just lucky enough to have many of these..and this one is taking a lifetime to post- ha..so I'd best get back to it...
One way insect eating bats are easily caught is in fine bird nets funneled along 'fly ways' usually over water, where sources of food tend to hang in abundance. like this cliff crack---
Bats are very agile flyers and can navigate around these nets when they detect them, but like other mammals...ahem...they make mistakes and sometimes just get 'caught up' in going along a familiar route or enthused over catching some food. This lands them in our net, where we patrol and remove them with care.
Here are a couple of bat species that we caught aside from what we were hoping to catch.
Clearly the first bat is not an insectivore, but a fruit bat (Ephomophorus walbergii), who just ended up in the wrong place at the wrong time. Thankfully this one did not scream at us, as they are wont to do, and placidly allowed us to untangle it. They aren't always so docile, as the thickness of the gloves belies the respect we have for their teeth and nails..ha. Note the large eye...sees very well (not blind)...actually doesn't echolocate...but sees better than we do in no so light conditions.
The reason why bats belong to the chiroptera (hand/wing) group is that their hand...note all the fingers (thumb down), is spread out over their wing- which has the same consistency as our skin.
People tend to think that all bats are really huge- but the body is actually quite small...it is the span of the wings which can be large. Fruit bats are the exception- most bats are tiny.
Another captured bat, who wasn't so keen on the attention, shows the more common size of bats:
Both extending the wing out and holding the bat as is shown, does not harm the bat. They are more protesting being disturbed from their foraging, untangled from a net, and being in this huge human's hands.