Really imo there's a few that needs to be maxed, a few that only requires 8 points in it. I.e focus and envade. Diffrence between 8 and 9 for those is like 1 crit and 1 dodge. Although envade had a 4 armor diffrence between 8 and 9.

Few skills I would max are Blast Blind Envade, 8 Focus, 7 in root. Diffrence between 7 and 9 for root is really low. Same applies for both roots. And 5 in avian

Really the rest of the skills ( Scream, Break, Heal, Thorn wall, repluse) is up to personal preference. Whatever works best for you. You want to be a tanky talon bird? Put high points in heal. 7-9 works best. Downside for this? No Thorn wall. Want thorn wall? Take the points out of break.

No build is the best.