Is anyone good enough to add some joints to Daz Crow's neck?

Hello,
is anyone good enough to add some joints to Daz Crow's neck without messing up the model? I tried several times, following tutorials and more, but the result was horrible.

Now, since the Songbird Remix models are fucking terrible and look like they're from 1999, I'd like to create morphs of various birds using the Daz Crow model as a base, and in this case, I would need a multi-jointed neck to create a pelican. Fewer joints in the neck would be fine for a seagull and a few fewer for a pigeon.

Obviously, once the models are finished, I will share them here on Zone if the result is good.

Thanks.