Lots of guessing involved :(

Yeah, solvable but not enjoyable.

Help for anyone who wants it......
At the bottom you're spelling out "ANGRY", the A is sloped on the right side. The 2 in row 1 is in columns 10 and 11, the 5 is columns 9-13. You can probably go from there, and if you get stuck you are trying to make a triangle-ish bird form.

Got it on the first try. all guess work but its pretty easy if you know what an angry bird looks like.

You can spell out "Angry" at the bottom logically without knowing the word. After that you just have to start making a loose blob shape around the end points.

Terrible. I don't know how I did it. Wouldn't be possible without help.

Unfortunately there are multiple solutions. After a hard guessing job the answer does not fit. Maybe I am making a mistake in the beak. It is the unique explanation! :(

Thank you!

The "bird" is a triangular head. the beak is a smaller triangle shape with a diagonal from upper left to lower right.