From https://www.jeremycollerfoundation.org/news-and-insights/pre... it sounds like the main takeaway is that they seem to conceptualise the sounds:

> the birds mistook long-distance contact calls and short-distance contact calls, which are acoustically very different. But, they never mistook a short contact call with a short alarm call, which have very similar acoustic patterns but entirely distinct meanings. As such, the study reveals that call perception elicits a mental imagery of the meaning of call-types, rather than triggering a reflexive response.

How do you see that?