Fantastic photos, I congratulate you on your persistence and skill. Do you ever use flash at weak settings? I haven't but some swear by it, especially for hummingbirds, others are opposed because it may bother the birds. I am taking the Field Guides tour of Western Ecuador (staying at Maquipucuna and Sachatamia, we added a one day excursion to Papallacta and Guano Lodge.