At noon I was home and has I looked outside to close the patio door, I saw a big yellow caterpillar moving on my balcony. The battery I used for my morning "expedition" at the park was charging but I always have a second one fully charged, so I putted it in and started shooting. Here it was climbing the wall, from my balcony. Had I not invested in a second battery I would have missed that opportunity. Second lesson on the 1st of August, always have your gear ready! What a way to start the month!