Here, we look at a rather different proposal: the decidedly non-standard, non-mainstream Birds Come First (or BCF) hypothesis proposed by George Olshevsky. Bird-like maniraptorans (deinonychosaurs and so on) are younger than basal birds, not older than them as they should be if birds evolved from deinonychosaur-like ancestors. For previous articles on non-standard phylogenetic hypotheses see...And for previous articles relevant to early birds and avian origins see...Refs - -Naish, D. 2000. The birds came first: a scenario for avian origins and early evolution, 1. The birds came first: a scenario for avian origins and early evolution.