I hatched out some chicks 2 days ago (not mine) and they were gooey- one that I helped out had bubbles/foam- they seem to be doing great. One pooped last night when I got them out of the hatcher and it was clear goo. I had to wash the chicks off before putting them back in the hatcher because I was afraid the goo would make them icky and wings stick in an awkward position. Any ideas why? It was only one particular breed.