What are the best LEDs at night for discovering animals such as rats, foxes and other predators or pests?
mainly the reflection of the eyes.
There are LEDs or UV or laser types that the eyes do reflect pigeons or other birds in trees?
I like to see more mention of animals & birds at evening / night walk
I’ve found white (full spectrum) to be the best to get eye’s to reflect. You need to hold the light at YOUR eye level, that way the light hits the animal’s eyes and reflects straight back to your eyes.
Try this on a dog/cat tonight, hold the light at waist level then at your eye level, you will see the reflection much better when held at your eye level.
I think red is used more by hunters because certain animals does see that spectrum of light well. Like C_K, normal white emitters seem to reflect eyes well, but I have never tried anything else.
Too bright a red light will cause you to lose your own night vision making it hard to see anything. I have the Nitecore 60mm red, green and blue filters and they fit the SRK and SupFire M6 perfectly as does the same makers 60mm diffuser. With the very wide output range and seven total brightness steps of the RMM modified SRK and M6 lights the red filter is a great complement to those lights, particularly the M6 as it’s lowest outputs are considerably lower than the modified SRK.
Those Nitecore 60mm filters have flexible rubber bodies and should fit lights with front ends from about 58mm to 62 or 63mm diameter. They fit my Fenix TK50 and with a bit of stretch also fit the TK60.
For reflection of eyes I'd also go with white. I sometimes see reflections off eyes of animals at night that are so far away I never get an id of what it was :-)