Tinamou

2 clues
S.A. bird
Ostrich relative
Similar answers:
Aaarating
Aameeting
Aameetings
Abating
Abbreviating
Abducting
Abetting
Ablastingindisguise
Aborting
Abstinence
Abstinent
Abstinentminded
Abtesting
Abutting
Acamouflagesuit
Accenting
Accentinganexam
Accepting
Accidentsarewaiting
Accommodating