This morning i came out to hear a strange honking noise coming from my hen, followed by some sneezing. I got a hold of her, and to my surprise, i found a strange pimple like lump in her mouth. Btw her choanal slit is fine, and the yellow blockage can out after swabbing it. I am not exactly sure what the lump is and i don't know whether i should worry. Could it be fowl pox?