a quick excursion to Tai Po Kau, the day was mostly drizzling, and it was the 2nd attempt with the Sigma 150-500mm. overall, there were very few insects or birds, and we ended up going back to Fung Yuen, but by that time, the sun was quite low. this wasn't that good of an outdoor day for me and I still need a lot of practice with handling a long lens with small aperture like the 150-500mm.