When flying all objects are fairly far so it’s like their POV isn’t really moving (it’s not a yes/no, it’s by how much).
(A stupid example: you can read big road signs while shaking you head but not as easily from a paper in front of you. The movement of your head is smaller relative to the sign. Or why when taking pics of the stars it doesn’t matter if the exposure is 12+h even if Earth has moved so much around the sun in that time.)
On the ground the distances are a lot smaller & more relevant. So chickens stabilise their had in fixed spots as much as possible (and “don’t look” while bobbing).
If they bobbed their had bcs of their limited eye socket movement (they can move them a little, some species a lot) they wouldn’t do it when not changing the direction of where they are looking.
(It’s prob also why you can hypnotise a chicken in a second with one move of your finger but not eg a parrot with more brain buffer.)
But we all do it, humans (prob mammals) have this trick when you “lose time” when calm & moving the eyes and/or head from one object to another. We don’t perceive it as such unless you look for it (you don’t remember the details of the panning even when you know it took you a few tenths of a second - but you do when eg playing sports). A bit like you stop processing your nose in your fov. Or how you don’t really remember having your eyelids closed when blinking.
When flying all objects are fairly far so it’s like their POV isn’t really moving (it’s not a yes/no, it’s by how much).
(A stupid example: you can read big road signs while shaking you head but not as easily from a paper in front of you. The movement of your head is smaller relative to the sign. Or why when taking pics of the stars it doesn’t matter if the exposure is 12+h even if Earth has moved so much around the sun in that time.)
On the ground the distances are a lot smaller & more relevant. So chickens stabilise their had in fixed spots as much as possible (and “don’t look” while bobbing).
If they bobbed their had bcs of their limited eye socket movement (they can move them a little, some species a lot) they wouldn’t do it when not changing the direction of where they are looking.
(It’s prob also why you can hypnotise a chicken in a second with one move of your finger but not eg a parrot with more brain buffer.)
But we all do it, humans (prob mammals) have this trick when you “lose time” when calm & moving the eyes and/or head from one object to another. We don’t perceive it as such unless you look for it (you don’t remember the details of the panning even when you know it took you a few tenths of a second - but you do when eg playing sports). A bit like you stop processing your nose in your fov. Or how you don’t really remember having your eyelids closed when blinking.