For some time I have been thinking of buying a thermal imager to help find subjects I want to photograph. I borrow a Pulsar Helican 2 XQ38F and an Infiray T3 which plugs into a mobile phone.
There is no comparsion.
Although the Infiray T3 has excellent reviews on Youtbe, I did not find it useful for finding wildlife.
The Pulsar Helican 2 XQ38F was much better. I found hares, snipe, partrdige, deer and skylarks with ease.
I am going to have to buy one, but want a Pulsar with a higher resolution.

Mike Lane wildlife photography https://www.naturephotography.co.uk/