Without language to label visual experience, the visual field is just a configuration of patterns, more or less like a Jackson Pollock painting. This puts enormous pressure on memory, and makes the detection of difference, such as sudden movements (changes in the pattern), a matter of life and death.
It is not clear how far the semiosis of adult lorikeets — they can live as long as 35 years — develops beyond protolanguage to the point of labelling phenomena. From observations of their behaviour, I suspect they have intersubjective labels — labels for each other — though it may be just that they recognise each other by indexical features, such as the timbre of their calls.
ChatGPT comments:
The question then is whether lorikeets move beyond this indexical mode into something approximating symbolic reference. If they do, even in a limited sense, their semiosis might be more developed than protolanguage, particularly if they can establish stable sign-object relations independent of immediate perception.