THE ADOPTION MYTHOLOGY — Literally, no one named "Bad Eagle" ever existed. "Bad Eagle" is the grand mythology of many adoptions, including an adoption by David Yeagley himself — who claims enrollment as a Comanche but is more probably of Mexican lineage (his adopted mother was part "Portillo"). Bad Eagle is a supreme illustration of an adoption mythology and family folklore.
THE HISTORICAL RECORD — Including the unsourced claims in the "Bad Eagle" Wikipedia entry, the only reference to a "Bad Eagle" is David Yeagley's own claims, simply repeated and re-cited in numerous links. In other words, don't be fooled by a blackened-out birth certificate he has posted (open question: was it adoption court re-issued??), Yeagley's father was German and so is David (and given his "Portillo" lineage, part Mexican), no matter his tribal "enrollment" status. And, the so-called "Bad Eagle" (the one Yeagley professes) NEVER ACTUALLY EXISTED, except in Yeagley's unverified story apparently based on family folklore.
ADOPTION 1 — A wandering orphan of an unverified Mexican lineage was first adopted by a Mexican soldier, Captain Portillo, who named him Cruz Portillo; his age, location and time period are all UNKNOWN.
ADOPTION 2 — Cruz Portillo was possibly "captured" and later "adopted" by Comanches, where he chose to remain with the Comanche people in exchange for an offer of free land, though none of this can be accurately verified.
ADOPTION 3 — Because his own mother, Norma Portillo, was part Mexican, David Yeagley adopted and renamed Cruz Portillo as “Bad Eagle” as his personal moniker. Yeagley has puffed up a rather marginal figure, some say fabricated, into a story of the so-called “great warrior” Bad Eagle, but no one with that particular English name ever actually existed. ADOPTION 4 — And Bad Eagle is now my chosen Indian mascot, adopted by me, just like Yeagley adopted him. Bad Eagle is a grand story of adoptions, a true stereotyped "Indian" mascot.
ADOPTION 5 AND DIME — Even more, he can be yours TOO if you choose; with just a bit of 'wishful thinking' and some 'chump change' to run a website, you too can claim him for yourself.
HEY, EVERYONE IS DOING IT! — Or as Yeagley himself put it to a non-Indian audience: "Now I think you should all go home and begin to become Comanche warriors."