• 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.
    • Rachel
      Participant
      Chirps: 1
      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.
    • Ruth
      Participant
      Chirps: 17
      What surprised me the most was there are fewer Hummingbirds in the United States than in Central and South America.  Ruth
    • Kate
      Participant
      Chirps: 4
      I’ve seen several explanations of how the forked tongue works, but never heard about it wrapping around their skull!  That is amazing.
    • Kathleen
      Participant
      Chirps: 3
      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?
    • Alessandra
      Participant
      Chirps: 5
      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.
    • Nancy
      Participant
      Chirps: 9
      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.
    • John
      Participant
      Chirps: 7
      Hummingbirds are amazing! The female does all the work. She builds the nests and raises her young. Out here in California, the Anna’s Hummingbird lives here year around. Give or take a day or two, Twenty seven days from egg to fledgling. The female Hummingbirds are magnificent carpenters. The nests are constructed strong and have some flex to them. Spider webs, moss, toilet paper and lichen all this material is use to make the nest out west
    • John
      Participant
      Chirps: 7
      Yes and no. I knew about torpor and how they lower their body temperature. I did wonder though how long it took for them to come out of torpor
    • Shirley
      Participant
      Chirps: 1
      Torpor is a new concept.  How long does it take for the bird to "come out of" the torpor state?
      • John
        Participant
        Chirps: 7
        I wanna say 30 mins
    • Ella
      Participant
      Chirps: 2
      Our friend has a hummingbird who will perch on their empty suet feeder throughout much of the day. If a Carolina wren comes to see if there is suet, the hummingbird will chase it off just so it can sit there! They really do perch so much more often than you realize, they're just hard to see cause they're so small :) love this course!
    • Liliana
      Participant
      Chirps: 5
      I just wonder if torpor makes hummingbirds more vulnerable to predators, at night?  Or do they hide very well among shrubs, or trunk holes...? Or maybe because they are quite cold, night predators will not find them so easily? If anyone knows I would love to hear! Thank you, Liliana
      • John
        Participant
        Chirps: 7
        Educated guess: I would say yes that torpor does indeed make them more vulnerable. I believe that this would happen more in South America and probably in the southern states. Snakes and feral cats for sure would be one of the top two predators.
    • This is so interesting. Never knew this about hummingbirds. I'm in the east so only have seen the ruby throated but always a delight to see them return in the spring.
    • Michelle
      Participant
      Chirps: 3
      Incredibly fascinating how hummingbirds use torpor while sleeping to conserve energy. I had no idea that was how they did it!
    • Helena
      Participant
      Chirps: 2
      I had no idea how their nectar sipping worked and find this very fascinating!
    • Karen
      Participant
      Chirps: 4
      I wonder if hummingbirds are especially vulnerable to predators when in torpor. I would worry about cats in particular. They are so beautiful! I love the incredible variety of shapes, sizes, feathers, and specializations with flowers.
    • Summer
      Participant
      Chirps: 6
      While I knew they moved their wings in a different way that other birds I did not realize the structural differences. I found the fact that the muscles used to fly make up 1/4 of their body weight. My little guy likes to sleep at the feeder, only once did he seem to go into torpor there, he ended up hanging upside down.
    • Karen
      Participant
      Chirps: 3
      I was surprised to learn how many species of hummingbirds there are in the world - far more than I ever imagined. Their energy-conserving adaptations, such as torpor, are quite amazing, but make perfect sense now that I know more about their high metabolism and energy consumption. Truly wonderful birds.
    • Joyce
      Participant
      Chirps: 1
      Quite amazing
    • Joey
      Participant
      Chirps: 2
      I was surprised to learn of the nectar robbing activity. I was unaware of this behavior. I did, after completing this section, observe a ruby-throated hummingbird drinking nectar from a Rose-of-Sharon flower, going at it from the underside of the flower rather than directly into the center of the flower. I also was unaware of how much time they spend perching. I have a male ruby-throated hummingbird who dominates my feeders. I have discovered his favorite perch in one of our trees, and now that I know, I can almost always find him there.
    • Pamela
      Participant
      Chirps: 3
      So very interesting!
    • Javier Eduardo
      Participant
      Chirps: 2
      It was very enlightening to get to know the mechanisms they use to feed. It is fascinating, im loving this course.