I just arranged the pallette like that because it was fun. 

I've been poking around trying to make it bird like but still keep what I more or less have now but have not had too much luck.

I will keep on trying and if not drop the bird status and just dub it as a new species!

Choosing between making it look like a bird or changing its form is a comprimise you have to take. At is current state, there are very little things indicating use that what we see is actually a bird.

Despite being apparently just a joke, I'd usggest not to redub it as a new species, for you still need a layer of associativity(?) for it to be believable in a way.

Alevice: nice edit! , but why do you arrange pallette as that? is that useful?

Thanks. That palette was one from Alucard's edit, I don't think I used many colors there, and I was too lazy to remove it

The roof itself is fine, just the windows on it are not.

Not really, I feel it is the other way around. Just look at the entrace stairs

Pretty much what Mr. Xion beat me to say. 

  j/k ofc

Here is a quick dirty job showing up what I mean, somewhat:

Hi there,

Grinning birds! I love grinning birds, I wonder why they are not used more in cartoons.

I think the current problems here is that there are not enough details that indicate us it is a bird, despite being cartoony.

The first noticeable thing is the lack of a beak, or assumptiosn of it. There needs to be more sorrounding the teeth, even if it is just a little orange here and there so it is kind of implied.

Overall anatomy, many common birds have "fat" bodies (I quote it, because -more often than not- it is just an illussion given by the feathers) and narrow heads, and short legs and long feet.

About shading, there is a lack of a clear light source on the body, while on the head it comes from the top left (from our perspective). I think the colors need a little changes, but I'll let someone more educated on the field explain about it (or point out to arne's art tutorial).

I did a quick dirty job addressing those points, inspired for the most part by Squit from the Goodfeathers. I apologize if it strayed too far from what your intention of depicting is:

Yours  -  edit