[obol] ability of birds to carry prey

[pamela johnston]

While I don't want to debate the Sharp-shinned Hawk load capacity, I would 
like to say that birds are stronger than we expect. If the burden is inert, 
that's a bit easier.

I once watched a Gray Jay fly away with a peanut butter and jam sandwich on 
large slices of bread which must have outweighed it. It kept a grip on it 
and cleared the ground, but its flight was low and sagging. They're 
motivated!

Pamela Johnston