Ruff
Two birds in one.
Just a random thought perhaps, but infrared binoculars are becoming rather easy to find and affordable in my market these days (at least in comparison to past years) and I'm wondering how useful they might be for birding. OK, this is in large part a search for an excuse to buy one, but would they be good for locating birds like owls and such in the dark? Locating flocks of birds at night in hopes of observing them at dawn? What are the listing rules for a Great Grey Owl observed as a heat signature? Do professional ornithologists use them?