I do hope this will not sound pedantic, but I am raising this as a choice to be made about how we refer to something. From the viewpoint of general usage, ‘platelets’ is not really
appropriate. My Macquarie 4th ed. says a ‘platelet’ is ‘a microscopic disc occurring in profusion in the blood, and acting as an important aid in coagulation’.
Birds in Backyards avoids the _expression_ when discussing the habits of the PBQ:
What does it do?
Painted Button Quail are active during the evening, night and early morning, feeding on the ground. They are usually seen in pairs or small family parties, searching for seeds, fruit,
leaves and insects. They create distinctive "soup-plate" depressions when foraging, by spinning alternately on either leg and using the other to scrape away the leaf litter, leaving circular depressions in which they look for food.
In relation to PBQ feeding, HANZAB says: ‘Scratch and glean, spinning on alternate legs in litter to create distinctive circular depressions where they feed. Up to 15 depressions
can be made in 1.5m².’ interestingly that observation is from Canberra, Grahame Clark in 1974. Unfortunately the source (Canberra Bird Notes 2 (10): 16-17) cannot be retrieved from the archive on the COG website (not by me, anyway)
HANZAB has a longer discussion of feeding ‘depressions’ in relation to the Black-breasted Buttonquail, beginning with ‘Create distinctive crater-like depressions (platelets) in
So I suppose ‘platelets’ might be here to stay, just as a convenient _expression_. We should remember, though, that it might need some explanation for people who do not know about
this special use of the term.