Male or female: does transport stress affect birds differently?
Published by Planète Pets · managing editor: Clément Lacaille · how our guides are written
Most transport advice addresses "the bird" as a single category, without distinguishing between sexes. A study published in 2025 by Bergman, Schober, Novak, Grief, Plue and Fraley in Poultry Science suggests that approach deserves nuance. Our other travel guidance is gathered in the bird travel and safety section.
Contents · 5 sections
The protocol: thirty-six ducks, three scenarios
The researchers split thirty-six 23-week-old Pekin ducks into three groups: a control group simply caught, a group crated for ninety minutes without moving, and a group crated then transported by truck for the same duration. Blood samples and brain tissue analysis were then used to compare the physiological stress response by sex.
A hen far more reactive than the drake
Corticosterone, the reference stress hormone in birds, rises in hens as soon as they are crated, and rises further in both hens and drakes once transport actually happens. But the gap between sexes is clear: the authors conclude that hens are overall more reactive to transport stress than drakes. In several brain regions, serotonergic activity changes in females across the stages of the protocol, with no comparable variation observed in males.
A convergence with a very different order of birds
This result is not isolated. A study already covered on this site, conducted in Hispaniolan Amazon parrots by Parks, Tully, Settle and Lattin (handling a parrot and cortisol: what a study reveals), had already found significantly higher corticosterone in females after thirty, forty-five and sixty minutes of restraint. Two protocols, two very distant bird orders — waterfowl versus parrots — and the same direction of result: that proves nothing definitive, but it does justify not treating sex as a negligible detail.
What this changes in practice
Neither study concerns a companion parrot or budgerigar transported by car, and the extrapolation stays cautious. It nonetheless suggests that, in a household with a pair of birds, the hen deserves as much observation as the drake during a trip rather than assuming both react identically. The general handling principles gathered in our article on stress signs during manual restraint apply to both sexes, with extra vigilance for the female if she shows early signs of agitation.
Frequently asked questions
Should a female be kept from travel during egg-laying?
Nothing in this study concerns reproduction, but a female during egg-laying is physically more fragile regardless; when in doubt, a veterinary opinion before any trip is the safest option.
Does this result apply to every companion bird species?
No, it was obtained in Pekin ducks and corroborated in a parrot, but never tested in budgerigars, cockatiels or canaries; it points to a plausible tendency, not a universal rule. Find all our guides on the bird hub.
In our shop, for this use: Parrot outdoor harness with elastic lead (€25.90) · 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.
