So I have a race of people who look mostly like humans, but share a lot of traits with birds, most notably:
- Wings placed midway down the back, roughly double their armspan (varies by species)
- Hollow, low-density bones
- Tailfeathers (size and shape varies by species)
- Increased lung capacity
Their max height typically caps out around 5'6". There is a degree of magic that grants them the ability to fly (to get around any remaining issues of human-shaped beings being unable to truly fly).
So the question is thus: What would a reasonable average flight speed be for a reasonably fit person of this species given ideal flight conditions (ie. good weather and favourable winds)?
I need this information to determine how far a group will have travelled so I can estimate how long a return trip will be with their flying capabilities hampered.
EDIT: Reworded information so question is clearer.