Oh and I just realized it said, "And other birds". Yes I think your crane has this.
Sorry for my rushed typing I am flustered for you.
Sorry for my rushed typing I am flustered for you.

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I agree, looks like pus in the Choanal slit to me too!That looks like something, maybe pus, is stuck in his choanal slit.
I can look laterWhat does the hole at the base of his tongue look like?
He acts normal other than swallowing a bunch.I found something!
https://www.chickenheavenonearth.co...-chicken-sicknesschicken-heaven-on-earth.html
Read through this. Its for chickens, but.... it might be helpful for a crane, too.
Oh and look at what it said in the article:
View attachment 1630095
It said, "After being given antibiotics"
And look here:
View attachment 1630096
Cheezy yellow substance in thoat?
I think your crane has this.
Ok. I’m not sure a vet is an option.Can't really tell by the pic but might be Trichomoninasis, or canker. Yellowish lesions appear in the throat and esophagus, sorta rounded protrusions.
Treatable with Metronidazole at 60mg/kg of body weight.
and Dimetridazole at 50mg/kg of body weight in the drinking water (0.05%) for 5 to 6 days. These drugs haven't been approved in the USA.
Best to get Phantom to a vet. Hope he/she recovers quickly.
Not that I have noticed. I’ll go check in a bit.Does themouth smell?
I just started treating him with the antibiotics 3 days ago.I surfed the internet for canker
I found a chart for canker vs. Thrush, which is the thingy I think Phantom has.
View attachment 1630102
Because @The Phantom, you were treating Phantom with antibiotics, I think that Thrush is the most likely.
Source:http://www.poultrydvm.com/condition/canker
Ok. How would he get that?A vet would be best, so would another exam with pictures. Canker (trichomoniasis), is common in pigeons and falcons, but uncommon in poultry, and probably even less common in cranes.
I've seen yeast in the mouth of a couple of birds and it did not look like this.
I'm not saying it's can't be either, just that it looks more like bacterial pus to me.