01534nas a2200133   4500008004100000245008700041210006900128260001600197490000600213520107600219100002001295700003101315856005401346       2018                        eng d00aZebra finches identify individuals using vocal signatures unique to each call type0 aZebra finches identify individuals using vocal signatures unique  cJan-12-20180 v93 a<p>Individual&nbsp; recognition&nbsp; is&nbsp; critical&nbsp; in&nbsp; social&nbsp; animal&nbsp; communication,&nbsp; but&nbsp; it&nbsp; has&nbsp; not&nbsp; beendemonstrated for a complete vocal repertoire. Deciphering the nature of individual signaturesacross call types is necessary to understand how animals solve the problem of combining, inthe same signal, information about identity and behavioral state. We show that distinctsignatures differentiate zebrafinch individuals for each call type. The distinctiveness of thesesignatures varies: contact calls bear strong individual signatures while calls used duringaggressive encounters are less individualized. We propose that the costly solution of usingmultiple signatures evolved because of the limitations of the passivefiltering properties of thebirds&rsquo;vocal organ for generating sufficiently individualized features. Thus, individual recog-nition requires the memorization of multiple signatures for the entire repertoire of con-specifics of interests. We show that zebrafinches excel at these tasks.</p>
1 aElie, Julie, E.1 aTheunissen, Frédéric, E.  uhttp://www.nature.com/articles/s41467-018-06394-9