A trip to the emergency animal clinic last night to see the avian vet.
Ezra was noticeably weak, a ball of fluffed trembly feathers and there were traces of yellow stain at her still engorged vent. Luckily, the vet determined Ezra did not have a broken second egg inside her, but was instead suffering from passing such a terribly large egg: a pinched nerve and possibly the beginnings of an infection caused from poopage backlog. A week of antibiotics and vinegar in the waterdish. She's fine this morning, easily standing on one leg to eat Nutriberries and drinking her soured water. And she didn't bite me when I gave her the antibiotics.
Random factoid learned: Greyhounds are universal blood donors.