Yes, and a rainbow lorikeet needs a log written with its liquid diet in mind. This is a brush-tongued nectar feeder, not a seed eater: a morning after it drank deeply can read very differently from a morning after it mostly played, splashed, and picked at fruit. Without dated notes, those normal swings look like illness one week and recovery the next. A log that pairs weight with feeding behaviour gives you the real picture.
Weighing a bird whose crop fills with nectar
Choose one routine and keep it: morning, before the first fresh nectar mix is offered, on the same perch scale each time. Record how much of the previous day's nectar and fruit was actually taken, and whether the mix was made to the usual strength, because a diluted batch, a hot day that spoiled food early, or a new flavour can all change intake. Note bathing and activity too. A lorikeet that spent the afternoon swinging, climbing, and calling is using energy very differently from one that sat quietly, and the next morning's figure only makes sense with that context attached.
Droppings, voice, and bounce belong in the entries
Rainbow lorikeet droppings are naturally loose and watery from a nectar diet, so write down what is normal for your bird rather than judging against a seed eater's firm dropping. Flag a change from its own normal: much less volume, an unusual colour, or droppings that suddenly become formed and dry alongside low nectar intake. Log voice and bounce as health data, because a healthy lorikeet is conspicuously busy and vocal. A bird that stops shrieking at the food cup, stays on one perch, or sleeps fluffed between feeds is telling you something the scale may not confirm until later.
Patterns that deserve attention
Act on a steady downward drift across several weigh-ins, not a single light morning after a low-intake day. Watch for weight holding while condition falls: feel the keel weekly, because a lorikeet can keep drinking sugary liquid while losing muscle if something else is limiting it. Note feather condition around the face and chest, where sticky nectar mats plumage, and record any sneezing, wet nostrils, or change in breath sound after feeding. Also log new plants, sprays used near the cage, and access to flowers outdoors, since a nectar feeder samples widely and that history can matter.
When the entries point to the vet
Contact an avian vet if the downward trend persists, if nectar is refused across more than a day, if droppings change sharply from your bird's normal, or if that trademark energy disappears. Bring the log so the vet can separate diet swings from genuine loss and see exactly when appetite, voice, and activity shifted. Guesswork is hard to avoid with a fast-moving, liquid-fed bird unless the record does the remembering. Review the pages monthly and mark the lorikeet's true normal range: its typical morning weight across good weeks, how many nectar cups it usually empties, and how its droppings look on an ordinary day. That self-made reference band is what turns a future odd reading into a clear yes-or-no question, instead of a comparison against some generic figure for the species that never described your bird. Filing each week's notes in KinsLe's Pet Passport keeps that nectar, weight, and behaviour history in one packet you can hand over in seconds.