Tree of birds

made this on an A0 paper. which is quite huge. needed the paper for school, on the other side of it is a poster of how to measure how many minerals water contains. First I wanted to draw all the Gen I and II flying type pokémon, but after a while I got bored and started to doodle just random birds. charizard, moltres, hoothoot, doduo, dodrio, zubat and ho-oh are drawn, and I hope I don't forget one ><.