I did not realize that hummingbirds spend so much of their time perched to conserve energy. I also found the description of torpor interesting and want to learn more about that.

I also wonder how they avoid predators while in and coming out of torpor.

I didn't realize they fed on tree sap and insects!

I'm surprised to learn that they also eat insects. I did wonder how they obtained protein, but thought maybe they ingested pollen along with the nectar.  I suppose that it would be pretty difficult to observe this behavior casually, since they zip around so fast, and you can't really tell what they are doing with their tiny beaks. I'm also surprised that they drink at sapwells. (I guess I should keep an eye on those lines of holes that the yellow-bellied sapsuckers keep drilling in my trees.)  I always wondered how they manage to survive when they arrive back in my area before anything is blooming, and before I put out feeders.

I was not aware that any hummingbirds feed on the ground. Also, I was surprised about how hummingbirds take advantage of the work that woodpeckers do!

It's amazing that when they "first wake up" it is 20-30 minutes before they can do anything.  How do they avoid predators or other dangers while in torpor or morning catatonic stage?

I am fascinated by their wing structure and how it lets them hover and move back and forth.

I've seen my Ruby throated perch on the top of the bird feeder for hours on end but now understand why. I also didnt know they ate insects as much as they do.

I didn't realize how cool the birds get during torpor.

I didn't know the wings specifications of hummingbirds and also that there were so many different species! Also, it was very interesting to learn that they go into torpor to save energy.

I didn't know hummingbirds also feed at sapwells! This is a good hint when you go out to see birds. Also, I find very interesting the anatomy of the body of these little flying gems.

We had no idea they go into torpor, and how cold their bodies get as well as how high their normal body temperature is. They are amazingly adapted to not only their nutritional needs but their environment. Truly amazing!

Nothing so far.  At least about the birds.  I am happy to see people helping us learn more about the life that surrounds. us.

Was surprised that 90% of their diet is nectar.  Learned they spend 75% of their day perching to conserve energy.  And, was surprised that they are almost invisible when in tarpor.

That hummingbirds really perch. I’ve been watching a hummingbird perch outside in a tree near my window but I kept telling myself, it can’t be a hummingbird because hummingbirds always fly. So, it was really good to learn that my observation was right and I really was seeing a hummingbird and not another bird.

I find the torpor fascinating! I live in Alberta, Canada so it can get quite cool here at night, even in the months that we see hummingbirds. It was really interesting to me that a hummingbird has been recorded with a body temperature down to 3 C!!

I didn't know hummingbirds ate insects. I also found the description of the tongue structure and function very interesting!

The sheer diversity in appearance of hummingbird species I've never seen before (in Southern America) astounds me, along with nectar robbing and how their tongue works.

Amaze by the anatomy, wing structure, tongue structure and the way it functions. Also there basic needs in terms of feeding. Very interesting.

What surprised me the most was there are fewer Hummingbirds in the United States than in Central and South America.  Ruth

I’ve seen several explanations of how the forked tongue works, but never heard about it wrapping around their skull!  That is amazing.

I was amazed by so many things!  I now have a better understanding of how hummingbirds fly and can hover.  What I found most surprising was the complicated structure of their tongues, their elongated hand bones, how many mitochondria they have and how some species have adapted a strategy of nectar robbing.   I now wonder how long on average it takes for flowers to refill with nectar and when hummingbirds are in torpor if they are usually perched or lying flat somewhere safe?

I was most surprised about the structure of their tongue, how its forked and wraps around their skull. I was only aware of woodpeckers having tongues that wrapped around their skulls.

I didn't know that hummingbirds eat so many insects!  I thought their primary food source was nectar.  I also didn't realize that they spend so much time perching.  Now I have looked for them perching in the trees outside my window.