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[[Ficheiro:Svalbard_Sample_for_Wiki.ogg|miniatura|Mostra das vocalizacións da foca barbuda gravadas cun hidrófono.]]
TheAs vocalizationsvoalizacións produceddesta byespecie theson beardedmoi sealpeculiares, areposiblemente veryporque unique, possibly becausea theirsúa [[tracheatraquea (vertebrados)|traquea]] isé differentdiferente fromda thatdoutros offócidos otherdo Northernnorte Pacificdo [[Earless seal|phocids]]Pacífico. A majoritymaioría ofdos theseus ringsaneis incartilaxinosos theda tracheatraquea areson incompleteincompletos withe only aunha membranemembrana attachingune theos seus twodous endsextremos.<ref name=":2">{{Cite web|url=https://www.boem.gov/ESPIS/0/312.pdf|title=Natural History and Ecology of the Bearded Seal, Erignathus Barbatus|last=Burns|first=John J.|date=May 1979|website=|access-date=}}</ref> TheOs soundsseus ofsons theconsisten beardedxeralmente sealun usuallylongo consisttrilo ofoscilante aque longdura [[Oscillation|oscillating]]un trillminuto lastingou formáis aseguido minutedun orcurto moree followedprofundo by a short, deep moanxemido. ThisEsta 'songcanción' is oftenadoita repeatedrepetirse frequentlyfrecuentemente.<ref name=":2" /> O Thenúmero numberde oftipos callde typeschamadas withindunha apoboación populationpode canvariar vary geographicallyxeograficamente, withe fourdistínguense typescatro foundtipos inen Svalbard ande elevenonce inno theÁrtico Westerndo CanadianCanadá ArcticOccidental. Os Thesons mostmáis frequentfrecuentes soundsson aretrilos trillsvibrantes, moans,xemidos ande sweepsvarridos. Un Adestes sweepvarridos canpode beser compared tocomparado a shortun trilo vibrante trillcurto.<ref name=":0">{{Cite journal|last=Risch|first=Denise|last2=Clark|first2=Christopher W.|last3=Corkeron|first3=Peter J.|last4=Elepfandt|first4=Andreas|last5=Kovacs|first5=Kit M.|last6=Lydersen|first6=Christian|last7=Stirling|first7=Ian|last8=Van Parijs|first8=Sofie M.|date=May 2007|title=Vocalizations of male bearded seals, Erignathus barbatus: classification and geographical variation|journal=Animal Behaviour|volume=73|issue=5|pages=747–762|doi=10.1016/j.anbehav.2006.06.012|issn=0003-3472}}</ref>
 
Bearded seals produce distinct trills from late March to late June, with a decline in [[rhythm]]icity in late May and June. This timeline coincides with their breeding and pupping season, which is from April to May. The repetitive and transmittable nature of bearded seal trills leads researchers to believe that they are utilized for communication, likely during [[Courtship display|courtship]] and breeding.<ref name=":1">{{Cite journal|last=Cleator|first=Holly J.|last2=Stirling|first2=Ian|last3=Smith|first3=T. G.|date=5 July 1989|title=Underwater vocalizations of the bearded seal (Erignathus barbatus)|journal=Canadian Journal of Zoology|volume=67|issue=8|pages=1900–1910|doi=10.1139/z89-272|issn=0008-4301}}</ref> Males use these sounds to establish mating territories and communicate their fitness,<ref name=":0" /> but it is likely that females produce these sounds as well.<ref name=":1" />
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