FINCHforum

Wondering if there would be any dramas if i put them in an aviary size 2.5m wide 2m tall 1.5m depth

Basically your size dimensions are perhaps just a little over 6' x 3' ( feet ) in old school imperial measurements which I normally go by,

This is way to small an area to mix such birds and to be perfectly onest one would be very foolish in mixing such birds together,

One bite from a Quaker parrot on a finches leg could be really critical

Best off keeping the finches in the avairy and the parrot in a large cage

No.... the only hookbills I would put in with finches would be scarlet chested parakeets (splendids) or bourkes).