the least avian of the early flying machines

Because we assume the maladroitness of natural design, nature can often beguile us: as the Wright brothers noted, the birds initially misled them in almost every particular, but their Flyer eventually succeeded by being the least avian of the early flying machines.

What does the bold part suggest?

That their plane was less like a bird than any of the other early attempts to build a flying machine.

Thank to you, Beeesneees.