C_Guest

The budgie that I've had for the past 2 years has recently changed the colour of their cere; they were relatively young when I first got them but they had a pronounced blue cere. Now, it's redish-brownish colour but there hasn't been any changes in their behaviour or their surroundings (other than the new chewing toys). Is the change because of health problem I could be unaware of? Apologies for not having any photos, they rarely stay still long enough for a clear photo. Thank you!