Nope, it's just listed as unarmed strike. Bloodclaw Master, a Tiger Claw-focused PrC, allows you to shift (like an Eberron Shifter) and gain a claw attack. It doesn't say if this counts as an unarmed strike, but it would make sense. If this is true, then natural weapons should count as unarmed strikes (much like how a monk's unarmed strikes, being able to deal lethal damage, are counted as both manufactured and natural weapons).
If we were to assume natural attacks count as unarmed strikes for the purposes of martial adept abilities, and that I could swap the Wildshape variant Ranger's wildshape ability and animal companion for the shapeshift ability of the Shapeshift Druid variant (as some have done on other forums), then I would probably do something like:
Spell-less Trap-Expert Shapeshift Ranger 16//Swordsage 16/Warshaper 4
This leaves me with +19 BAB, Unarmed Strike damage as Monk, full martial weapon proficiency, base saves= Fort 14, Ref 11, Will 11, Initiator level 16 with 8th level maneuvers, Shapeshift into Predator, Aerial, Ferocious slayer (+1 size), Forest Avenger (+1 size) and Elemental fury (+2 size) forms, all with multiple natural attacks with damage scaled for size. Can't fly in any form but Aerial, but I could take Outsider Wings (or go with Dragonborn lesser Aasimar and take wings aspect) or get some other ability to fly in my natural form, Warshaper can grow wings used for wing buffet attacks. Normally those can't be used to fly with (only attack), but Shapeshift says:
You keep all extraordinary, supernatural, and spell-like special attacks and qualities of your natural form, except those requiring a body part your new form does not have.
Since my new form
can grow wings, they should be able to be used to fly as normal. At least, that's what the wording seems to indicate.
Then again, Sinfire can easily cut the legs out from under this build and I'll have to start from scratch for the bazillionth time.