The migration south they accomplish is amazing as well as all the different types and beautiful names that describe them

When I am outside gardening, I usually hear the hummingbird before I see it (because my attention is on the task). Now I know how that buzzing sound is produced through the amazing structure of the wings and their motions - creating lift on the downstroke and upstroke. Fascinating.

The bone and muscle structure in the hummingbird is fascinating and their placement of the tongue when not in use is amazing.  It was kind of funny because as I was watching this part of the program I saw a ruby throated hummingbird visiting our flowers and I had to pause and watch the wings and the way they hovered.  I am able to look at them so differently now.

They are fascinating birds and their anatomical features that you have described are amazing. Vivid iridescence and how it works is really cool. The wing make-up was not as surprising as the 2 muscles and % of mitochondria. It makes sense, but it's incredible that some 2-3 gram creatures would look like bodybuilders without their feathers. Their tongues are amazing in every way. The sap sucking and nectar robbing were surprising behaviors, coming from ignorance. it's interesting that hummingbirds and downy woodpeckers are very comfortable feeding near each other at my backyard feeders. The torpor makes sense, but leads to a bunch of questions. Doesn't it leave them very vulnerable at their nests (but if thermally neutral, maybe not to snakes)? What's it like for the females to be raising chicks? Don't they draw potentially more attention to the nest when the moms are vulnerable in torpor? What's the timing of raising them, before they go out on their own? What's the behavior of the chicks that leads to body temperature and temperature controlling methods. Do they have a higher protein to nectar diet than adults?

I think what surprised me were some of the statistics and facts shared in this lesson. For instance, I knew hummingbirds needed to rest or conserve energy, but I didn't know that this could account for about 75% of their day. I also found it interesting to learn what it takes for hummingbirds to be able to fly and hover to do their daily tasks, as it was more complicated than I thought.

I am concerned about how do Hummingbirds deal with bees.