My Vortex Viper HD Spotting Scope with Ollin magnetic adapter. I go birding, and take bird videos with this combo. Super easy to digiscope with (no more fidgeting with the adapter) and the magnification on the scope is pretty powerful. Shameless plug for my Instagram @thecronicbirder
The bird makes a call that sounds like the word “dee”, over and over. Just as someone who runs is a runner, a bird that’s dees, is a dee-r, so it’s not deer in the sense of the animal the way you may think. At least that’s what I’ve been told. The “kill” part is a bit strange, but I’m assuming it comes from the fact that this bird will feign a broken wing to distract a predator away from their nest. All in all, I’m really not sure on the origin of the name, but that’s what I’ve learned in my last 3 years of actively being a part of the birding community.