3 VG call(s) stretch, adult; ah-roo, 4 VG call(s) stretch, adult; ah-roo, VG call(s) continuous, alert; squak, 2 VG call(s) forward; squak, 5 VG call(s) greeting; keh-keh-keh, 4 VG call(s) stretch, adult; ah-roo, 2 VG call(s) greeting; keh-keh-keh, 3 VG call(s) stretch, immature, 9 VG call(s) stretch, immature