Table 2 in A new species of scops-owl (Aves, Strigiformes, Strigidae, Otus) from Principe Island (Gulf of Guinea, Africa) and novel insights into the systematic affinities within Otus

Table 2. Measurements (in Hz) of bioacoustic variables (frequency parameters) of Otus species of the Afro-Palearctic clade, O. brucei and of O. ireneae (the species whose vocalisations are closest to the ones of the candidate species from Príncipe). n: number of individuals. Average ± standard deviation; (minimum-maximum values). F1: frequency at start; F2: frequency at end; F3: frequency at 25% of total duration; F4: frequency at midpoint; F5: frequency at 75% of total duration; F6: frequency at maximum amplitude; F7: maximum frequency; F8: minimum frequency.
TaxonnF1F2F3F4F5F6F7F8O. bikegila sp. nov. (main call)5891.0 ± 72.9967.0 ± 32.31012.3 ± 44.2981.3 ± 40.2967.7 ± 35.81005.7 ± 47.61054.0 ± 30.1910.3 ± 43.2(781.7-961.7)(933.3-1020.0)(980.0-1090.0)(950.0-1050.0)(931.7-1020.0)(976.7-1090.0)(1035.0-1106.7)(868.3-973.3)O. bikegila sp. nov. (cat-like call)2966.7 ± 80.1859.2 ± 27.11180.8 ± 121.41234.2 ± 62.51149.2 ± 140.21220.0 ± 70.71245.0 ± 77.8853.3 ± 4.7(910.0-1023.3)(840.0-878.3)(1095.0-1266.7)(1190.0-1278.3)(1050.0-1248.3)(1170.0-1270.0)(1190.0-1300.0)(850.0-856.7)O. hartlaubi51236.2 ± 101.51220.7 ± 54.91409.7 ± 65.91396.3 ± 80.01340.5 ± 62.21383.2 ± 62.51461.8 ± 47.21178.2 ± 83.0(1078.3-1360.0)(1155.0-1285.0)(1330.0-1478.3)(1295.0-1483.3)(1250.0-1418.3)(1331.7-1480.0)(1407.5-1526.7)(1066.7-1267.5)O. senegalensis senegalensis41235.0 ± 184.21133.3 ± 112.71092.5 ± 123.31156.7 ± 60.51074.6 ± 83.91134.2 ± 84.31422.5 ± 341.5963.3 ± 70.4(1071.7-1433.3)(1035.0-1260.0)(1021.7-1276.7)(1095.0-1236.7)(1011.7-1198.3)(1051.7-1251.7)(1126.7-1908.3)(885.0-1050.0)O. senegalensis feae31220.3 ± 146.61189.2 ± 50.61165.3 ± 76.31203.3 ± 92.51143.1 ± 46.81156.9 ± 75.11310.3 ± 54.91098.9 ± 68.1(1060.0-1347.5)(1132.5-1230.0)(1120.0-1253.3)(1145.0-1310.0)(1110.0-1196.7)(1107.5-1243.3)(1250.0-1357.5)(1050.0-1176.7)O. pembaensis5575.3 ± 47.8665.7 ± 65.3693.7 ± 52.8709.7 ± 52.7711.0 ± 49.1702.0 ± 50.0726.0 ± 48.9593.0 ± 49.5(506.7-636.7)(613.3-773.3)(621.7-770.0)(633.3-780.0)(651.7-783.3)(638.3-776.7)(660.0-790.0)(530.0-660.0)O. pamelae51116.3 ± 72.71190.0 ± 55.41219.0 ± 90.51241.0 ± 104.81179.7 ± 75.61250.3 ± 91.51349.0 ± 114.41054.3 ± 40.4(1031.7-1213.3)(1111.7-1268.3)(1120.0-1363.3)(1096.7-1366.7)(1083.3-1291.7)(1160.0-1403.3)(1220.0-1516.7)(1020.0-1123.3)O. scops51505 ± 137.51210.2 ± 44.11203.8 ± 39.01230.1 ± 34.91255.3 ± 44.71255.3 ± 46.21478.6 ± 121.81183.5 ± 43.4(1335.0-1695.0)(1152.5-1275.0)(1155.0-1260.0)(1200.0-1285.0)(1193.3-1318.3)(1210.0-1326.7)(1336.3-1628.3)(1140.0-1253.3)O. cyprius (long note)51312.6 ± 60.01079.7 ± 67.11084.6 ± 73.11091.0 ± 71.71101.4 ± 65.11139.4 ± 72.71391.1 ± 85.41059.7 ± 72.2(1236.7-1400.0)(1016.7-1193.3)(1035.0-1213.3)(1035.0-1216.7)(1043.4-1213.3)(1063.4-1231.7)(1291.7-1520.0)(996.7-1183.3)O. cyprius (short note)51128.1 ± 59.71038.5 ± 57.11094.8 ± 132.11046.6 ± 90.61045.7 ± 85.51067.2 ± 72.91212.9 ± 104.91007.9 ± 75.4(1058.9-1223.3)(998.3-1135.0)(1015.0-1330.0)(976.7-1200.0)(960.0-1186.7)(1020.0-1196.7)(1124.4-1345.0)(945.0-1138.3)O. brucei4355.0 ± 48.8358.3 ± 49.1463.8 ± 75.5447.1 ± 62.0390.4 ± 50.2462.1 ± 63.6469.6 ± 69.5336.3 ± 48.0(285.0-388.3)(285.0-388.3)(356.7-530.0)(356.7-493.3)(335.0-450.0)(370.0-510.0)(370.0-530.0)(270.0-373.3)O. ireneae2936.7 ± 99.0919.2 ± 38.9943.3 ± 75.4945.0 ± 73.1926.7 ± 51.9946.7 ± 61.3958.3 ± 58.9892.5 ± 43.6(866.7-1006.7)(891.7-946.7)(890.0-996.7)(893.3-996.7)(890.0-963.3)(903.3-990.0)(916.7-1000.0)(861.7-923.3)