Noticed something … odd about your Twitter stream? Do you see a lot of … colorful birds instead of the pretty faces of your friends? Well, apparently you’re not alone. A flood of complaints is overwhelming Twitter about the new Twitter avatar taking over user pictures.

What’s causing this issue? Well, we’re not sure and apparently Twitter is not either. Twitter Platform Lead Alex Payne has already tweeted about the situation:

“Many people in my timeline suddenly have default user icons. This is probably not intentional. I have inquired with colleagues.”

This is a bug, and it is one we suspect will be fixed soon (along with others that are being reported to us). So don’t panic. If your picture has disappeared into the clouds though, let us know in the comments.

Update #1: Twitter has provided the following update:

We’re working on a bug whereby the default avatar is showing up for users who have previously uploaded their own image. We hope to resolve this soon.

Update (5:30p): We’ve identified the root cause of this problem and expect the issue to be resolved within the next several hours.