this post was submitted on 27 Aug 2025
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Hummingbirds get lift on both strokes, forward and back, and require an extremely specialized set of wings to do so.
In regards to your comment about muscles for lift, birds have a “keel bone” (like a boat) which is where the anchors for their wing muscles are. Equivalent to our sternum. So the muscles for flight in the image would be on the front, not the ribs or spine.
I thought about that, but I don't think that makes sense in this situation. The wings and arms must use different muscle groups, and the biceps would be used for the arms, not the wings. Furthermore, since the wings are on the back of Pit, the muscles would either have to wrap around the rib cage or go through them, constricting the lungs.
I’m not sure what your comments about the arms have to do with anything. Your sternum is on your chest, wings on your back, I’m not understanding why you’re talking about arms.
In regards to muscles having to wrap around the rib cage, that’s exactly how birds wing muscles work.