i have 3 pairs of finches . 2 male zebras always fight but they never injure each other ,the other one is neutral, it always ends with threatening from both sides.but a few moments ago scream really ATTACKED hyper.i did not see it but heard the screaming and looked at the cage to find hyper on the bottom all fluffed up and limpimg(ish).the vet is closed today so i cant call him.is this serious?