hˈɛlɪkˌɑːptɚz ɑːɹ nˈaʊ ɐ vˈæljuːəbəl tˈuːl ɪn mˈʌstɚɹɪŋ lˈɑːɹdʒ ˈɛɹiəz; ðeɪ ɑːɹ jˈuːzd tə loʊkˈeɪt ðə kˈæɾəl ænd wɪl ðˈɛn ɐsˈɪst ðə mˈaʊntᵻd stˈɑːkmɛn tə jˈɑːɹd ðə kˈæɾəl.
Helicopters are now a valuable tool in mustering large areas; they are used to locate the cattle and will then assist the mounted stockmen to yard the cattle.