Cage and perch height: a genuine dominance signal in birds?
Published by Planète Pets · managing editor: Clément Lacaille · how our guides are written
"Never place the cage above eye level, or the bird will think it dominates you": this advice, repeated for decades on aviculture forums, rests on very little data for companion parrots. A study published in 2017 nonetheless offers a first scientific look at the link between perch height and social status, measured in other bird species.
Contents · 5 sections
What does the study on pigeons and great cormorants show?
A study by Portugal, Sivess, Martin, Butler and White, published in 2017 in the journal Ibis, established the dominance hierarchy of two captive bird populations — homing pigeons and great cormorants — then compared that ranking to the perches each individual chose spontaneously (see the study). The result: in pigeons, perch choice was significantly repeatable across individuals, and dominant birds consistently occupied the highest perches. The authors explain this link through two functional advantages of height: earlier predator detection and a better position from which to display aggression towards flock mates.
Does this result apply to companion parrots?
Not directly: the study covers neither African greys, Amazons, nor any psittacine species, and avian behaviour specialists point out that wild parrots do not form dominance hierarchies comparable to those of pigeons or cormorants. The mechanism observed — height meaning predator detection plus a display posture — remains plausible in any bird species, captive ones included, which explains why some parrots perched up high adopt a more confident posture without this reflecting any intent to "dominate" the household.
What should this mean for where you place the cage?
- Height alone does not create aggression: a biter perched high often stays a biter perched low; the cause-and-effect link is not proven in psittacines.
- A cage placed too low, on the other hand, exposes the bird to genuine stress tied to a sense of vulnerability, consistent with the "predator detection" advantage seen in the study.
- The best-documented compromise remains a cage at shoulder height or slightly above, neither at floor level nor towering over the whole room.
- For the out-of-cage play area, follow the practical guidance in our guide to play gyms and perch stands, which recommends staying below head height to make recall easier.
Should you change anything if a bird becomes aggressive up high?
Rather than systematically lowering the cage, it is better to look for the real cause of the aggression: seasonal hormones, lack of sleep, poorly defined territory around the cage. Our general placement guidance, independent of height, is detailed in the guide to cage placement: mistakes to avoid. All our setup guides are gathered in the bird bedding and habitat category.
Frequently asked questions
Should you avoid letting a parrot perch on your shoulder, a very high position?
It is not the height itself that is the issue, but the closeness to the face: some birds bite out of excitement or surprise at that distance, regardless of any dominance logic.
Did the study measure any effect in farmyard birds?
No, it covers homing pigeons and great cormorants, two species chosen because their dominance hierarchy in captivity was already well characterised, which made comparing it to perch choice easier.
Is a height-adjustable cage stand worth buying?
Yes, especially to observe the real effect on your own bird: some visibly relax when higher up, others do not, and only direct observation can settle it for each individual.
In our shop, for this use: Bendable multicolour cotton rope perch, 40 cm (€21.90) · the whole shop
This guide is part of Planète Pets’s Birds universe. Our advice is general in nature: for any health concern, your veterinarian remains the only reference.