20/09/2024
Last year's Barbary tiercel mid-moult. At one year old, moulting into adult plumage, not only is the change from brown to blue dramatic but you can clearly see that the adult flight feathers are significantly shorter and generally more compact.
The larger feathers of the immature provide extra lift and stability but, once flying skills are properly honed, would just create more drag.
去年のバーバリの雄トヤ中。