12-23-2022, 01:28 AM
Quick question for those who know, because I don't.
I have read that for most prey mammals, they only have rods in the retina and hence don't see color, though due to the amount/density of the rods in the retina, they see b/w and shades of gray pretty good even in low light, like at night.
would a RED LED that emits at one wavelength be invisible to a pig? Do pigs have any cones in the retina or are they all rods like many other mammals? I've always used a red led head lamp or red led flashlight to move through to a hunting area early morning before dawn because it was my understanding that deer couldn't see the red light from an LED since they have no cones in the retina.
I was wondering if pigs were the same. There was enough red light given off by the LED that close range navigation (within 5 feet) was possible at night.
thanks,
-tdbru
I have read that for most prey mammals, they only have rods in the retina and hence don't see color, though due to the amount/density of the rods in the retina, they see b/w and shades of gray pretty good even in low light, like at night.
would a RED LED that emits at one wavelength be invisible to a pig? Do pigs have any cones in the retina or are they all rods like many other mammals? I've always used a red led head lamp or red led flashlight to move through to a hunting area early morning before dawn because it was my understanding that deer couldn't see the red light from an LED since they have no cones in the retina.
I was wondering if pigs were the same. There was enough red light given off by the LED that close range navigation (within 5 feet) was possible at night.
thanks,
-tdbru