So I was thinking of taking a two level dip into this class and the archetype appealed to me as flavorful. Falconer archetype page
At 1st level, a falconer earns the trust and companionship of a bird of prey. The bird can be of any type of large hunting or scavenging bird (even a vulture). This ability functions like the druid animal companion ability (which is part of the nature bond class feature), but the falconer must take the bird animal companion, and that companion has only half the normal hit points.
However I am unsure what the limitations are on this? It mentions a "bird of prey" it also says it can by "any type of large hunting or scavenging bird" so to me that sounds like any bird of prey listed under the "bird" type for druid/ranger animal companions.
Here is where I viewed the list of "Birds"
However it also says, "but the falconer must take the bird animal companion" which leaves me wondering if it is simply limited to bird or the several detailed mentions above of a bird of prey?
I am clearly unconcerned with the power of the companion in combat as this will only be a two level dip but I wanted to be sure what my limitations where regarding it.