A crow can count out loud before it knows the word for four.
Carrion crows learned to produce one to four calls on command, and their first call hinted at how many were coming.
Published
Evidence boundaries Solid · Inference · Speculation
A 2024 Science study showed crows producing one to four vocalizations in response to numerical cues.
Numerical planning and vocal control need not depend on human language.
Animal counting may help separate number sense from symbolic language.
The crow appears to know how long the answer will be before it starts.
The birds produced a requested number of calls, then signaled completion.
Acoustic features of the first call predicted the planned sequence length.
Counting may begin as planned action before it becomes arithmetic.
Number may come before number words.
The experiment matters because it separates quantity planning from symbolic language more cleanly than human behavior usually allows. The crow did not need a word for four to prepare a four-call sequence.
That is not human arithmetic, and the study does not claim it is. The interesting part is the architecture: a system can represent how much action is coming before it has anything like a spoken numeral for the amount.
Think with the idea.
Take me sideways
Music and movement can also encode quantity through sequence.
Analogy.Challenge it
This is not evidence of human-like arithmetic.
Scope boundary.