In frogs, male territorial behaviour is often observed at breeding locations; calling is both an announcement of ownership of part of this resource and an advertisement call to potential mates.
ɪn fɹˈɑːɡz, mˈeɪl tˌɛɹɪtˈoːɹɪəl bᵻhˈeɪvjɚɹ ɪz ˈɔfən əbzˈɜːvd æt bɹˈiːdɪŋ loʊkˈeɪʃənz; kˈɔːlɪŋ ɪz bˈoʊθ ɐn ɐnˈaʊnsmənt ʌv ˈoʊnɚʃˌɪp ʌv pˈɑːɹt ʌv ðɪs ɹᵻsˈoːɹs ænd ɐn ˌædvɚtˈaɪzmənt kˈɔːl tə pətˈɛnʃəl mˈeɪts.