If they are patrolling their territorial boundaries, the marking frequency increases drastically, to once every .
ɪf ðeɪ ɑːɹ pɐtɹˈoʊlɪŋ ðɛɹ tˌɛɹɪtˈoːɹɪəl bˈaʊndɚɹiz, ðə mˈɑːɹkɪŋ fɹˈiːkwənsi ˈɪŋkɹiːsᵻz dɹˈæstɪkli, tə wˈʌns ˈɛvɹi .