Zebra finch has ruffed up feathers all the time?

Zebra finches may appear to have ruffled feathers due to various factors, including temperature regulation, stress, or health issues. In colder environments, they fluff up their feathers to trap air and retain heat. If their feathers are consistently ruffled, it could also indicate discomfort or illness, prompting a need for closer observation or veterinary care. Generally, healthy zebra finches should have smooth and well-groomed plumage.