Kilverm is levamisole, and should be effective against most worms. If she has a huge roundworm load again, I suppose they could be causing a blockage. @dawg53 has some experience with levamisole and a lot with worm advice. @azygous is very helpful with crop disorders.I wormed them with kilverm. Yeah she always has unlimited water until i seen that her crop was ballooning up and water came out of her nose and mouth. I could take her to the vet tomorrow, but I’m not sure if there’s any avian vets.