yOUR REPLY DESCRIPTION OF THROAT MASS:
That yellowish stuff from her throat looks like the stuff you would find in an infection in a chicken. Almost like yellowish hardened cottage cheese. Can you see the area on the throat you are swabbing? could she have a cut in there that has gotten...
first if the bird had a growth in the mouth it was canker
and you need to give much more of the horse paste ivermectin as the whole tube is used for one horse
and it takes much more of it to worm a chicken than a size of a bb.
I would give it at least a 3/4 inch size piece of the paste...