The art is really good, very impressive, but the readability isn't as great. What I mean by that is just the ability to quickly glance at something and understand what is being looked at. When I look closely I can tell it's a bird, but at first it looked like a squid stuck in a furry rock or something. The main problem is that there's not a clear face, the line for the mouth is very shallow. That combined with the head being a completely different color to the body made it look like the body was being obscured and that the actual body was a separate object.
There are a few ways to go about fixing this, it depends on what you want out of it, but I think tweaking the blues and greens to get a little brighter with more contrast will help the body look like a body, and I think making the mouth stand out a little more will help with the head. I think this problem might be more easily solved before the refinement stage. If it doesn't look like itself in an unrefined state, there's something wrong with the design. If it did before and has lost something, then it's something in the refinement that has a problem.
To put things another way, in my opinion, an artist should never need to depend on one element of art to get the point across, if they do, they're using it as a crutch to hide a deficiency in their art. For example, people who need a lot of colors to make things look 3D tend to have a very poor grasp of lighting, people who need outlines don't understand form or silhouette, and so on. So you can sometimes find your own weaknesses by keeping an eye on your process, or by trying new styles, and staying honest with yourself. Then you can focus on and conquer those weaknesses!
But seriously, there's some great pixel art there, and the color choices are friendly and cohesive. Some great work.