Can these two
share an aviary?
Pick two species and get a verdict, the reasoning behind it, and the conditions that have to hold for it to work.
Based on temperament and size difference. Individual birds vary, and any verdict here is subordinate to what you actually observe in the first week.
The rules behind the verdicts
Size gap decides severity
Two birds of similar size squabble. Where one is three times the other, the same squabble takes a toe or an eye. Size difference, not aggression, is the first thing to check.
Nest sites cause the fights
Most mixed-collection injuries happen in the week the first egg is laid. A flight that worked all winter becomes a battleground in spring. Remove nest boxes from mixed flights.
Some species never mix
Lovebirds, Quakers, ringnecks and rosellas mutilate other birds' feet and beaks regardless of size. This is not a training problem. Keep them in single-species flights.
Space changes the answer
A pairing that fails in a cage often works in a walk-in flight, because the subordinate bird can leave. Cage and aviary are not the same question.
Sizing the flight is the other half of this. The cage and aviary size guide gives minimum and recommended dimensions per species.
Record which birds share which flight, and who came out of it injured.
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