Setting up a weigh-in an Amazon will accept
Amazons are bold, food-driven birds, which makes scale training refreshingly straightforward: put a perch stand on a gram scale, reward stepping onto it with a small piece of a favourite food, and the bird will usually hop on eagerly within a few sessions. Weigh weekly, in the morning before the first feed, because an Amazon that has just eaten a hearty breakfast carries that meal in its reading. Let the bird settle and stand squarely before you note the number, and record it the same way every week. A bird that is new, nervous, or inclined to bite can travel to the scale in its sleeping cage or carrier and be weighed inside it, subtracting the container's weight afterwards, until stepping up feels safe.
Know your Amazon's own normal
Amazon parrots span a wide size range across their many species, from the compact white-fronted at the light end to the hefty mealy at the heavy end, with the popular blue-fronted and double yellow-headed types in between, so a single ideal number for an Amazon does not exist. What exists is your bird's healthy adult weight: the figure it holds, give or take a little, across weeks of normal appetite, activity, and moult. Establish that baseline while the bird is well. Then read changes honestly. Amazons are champion gradual gainers, adding a few grams a week on a rich seed-heavy diet and a sedentary cage life until the bird is substantially overweight and nobody noticed a single dramatic moment. The written weekly log is what catches that creep.
Feeling for condition along the keel
Run a fingertip down the centre of your Amazon's breast during a calm moment. The keel bone should be findable, sitting between two full, firm pads of flight muscle that feel like the fleshy part of your own thumb. Amazons in trouble usually fail this test on the heavy side: the keel disappears into a soft, rounded chest, the breast feels like a cushion, and you may see the chest divided by a shallow groove of fat or feel rolls over the thighs and around the vent. A sharp, protruding keel with hollowed sides is the opposite problem and less common in this genus, but it matters just as much, particularly in an older bird or one recovering from illness. Score what you feel in your notes each month alongside the weights.
When weight change means a vet visit
Amazons carry real risks with excess weight, including strain on the liver and feet, so treat a steady upward trend across a month, laboured breathing after short flights or climbs, or a bird that stops flying and only climbs as reasons to book an avian vet and review diet and exercise together. A sudden drop, loss of appetite, changed droppings, or a newly sharp keel in a bird that was round last month deserves a prompt appointment, because Amazons, like other parrots, hide illness well. Do not crash-diet an overweight Amazon on your own; parrots should lose weight slowly under guidance so the liver is not stressed. A dated weight and condition log makes that guidance far more precise, and KinsLe's Pet Passport holds the whole run of readings together so you and your vet can see the direction of travel instantly.