In a behavioral experiment, crows were able to learn to produce a set number of calls. This involves them planning in advance. From the sound of the first call in a numerical sequence, it is possible ...
Crows can control the number of vocalizations they produce, “counting” up to four in response to visual and auditory cues, researchers report. The findings suggest that the birds are capable of using ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results