Call repertoire of Bitterns Ixobrychus in Russian Far East
DOI:
https://doi.org/10.33910/2686-9519-2023-15-3-606-622Keywords:
little bittern, Chinese bittern, hybridization, acoustic signals, biology, Russian Far EastAbstract
Acoustic repertoire of bitterns Ixobrychus has not been sufficiently studied, and descriptions of their calls, with rare exceptions, are given only verbally. We recorded and analyzed 438 sonograms of calls of the Amur, Chinese, little bitterns and hybrids. In contrast to the advertising call, most types of calls in these species turned out to be similar in sound, structure, and time-frequency parameters. The most species-specific are the mating call, the alarm calls of females (“cawing” and “crowing”), the distress call of males, and the “beep” of nestlings.
References
ЛИТЕРАТУРА
Березовиков, Н. Н., Лухтанов, А. Г. (2014) О гнездовании малой выпи Ixobrychus minutus в Зайсанской котловине. Русский орнитологический журнал, т. 23, № 1057, с. 3143–3144.
Гамова, Т. В., Сурмач, С. Г., Бурковский, О. А. (2011a) Новые сведения о гнездовой биологии амурского волчка Ixobrychus eurythmus (Swinhoe, 1873) в Приморском крае. Вестник ДВО РАН, № 4, с. 14–22.
Гамова, Т. В., Сурмач, С. Г., Бурковский, О. А. (2011b) Первое свидетельство гнездования китайского волчка Ixobrychus sinensis (J. F. Gmelin, 1789) на юге Дальнего Востока. Русский орнитологический журнал, т. 20, № 676, с. 1487–1496.
Гамова, Т. В., Сурмач, С. Г., Бурковский, О. А., Коробов, Д. В. (2022) Первый случай гнездования малого волчка Ixobrychus minutus и гибридов I. Minutus с I. Sinensis на Дальнем Востоке России. Амурский зоологический журнал, т. XIV, № 3, с. 492–515. https://doi.org/10.33910/2686-9519-2022-14-3-492-515
Глущенко, Ю. Н., Сотников, В. Н., Вялков, А. В и др. (2016) Новые данные о гнездовании китайского волчка Ixobrychus sinensis в Приморском крае. Русский орнитологический журнал, т. 25, № 1325, с. 3033–3038.
Глущенко, Ю. Н., Сотников, В. Н., Коробов, Д. В. (2018) Орнитологические наблюдения в Приморском крае в 2017 году. Русский орнитологический журнал, т. 27, № 1588, с. 1485–1495.
Долгушин, И. А. (1960) Птицы Казахстана. Т. 1. Алма-Ата: Изд-во АН Казахской ССР, 437 с.
Кошелев, А. И. (1977) К распространению и экологии большой (Botaurus stellaris L.) и малой (Ixobrychus minutus L.) выпей в Западной Сибири. В кн.: Фауна и систематика позвоночных Сибири. Новосибирск: Наука, с. 280–285.
Лопатин, В. В., Карпов, Ф. Ф., Клеймёнов, С. В. (1992) Биология волчка (Ixobrychus minutus) на юго-востоке Казахстана. Русский орнитологический журнал, т. 1, № 2, с. 227–234.
Меликян, К. А. (2008) Биология гнездования малой выпи Ixobrychus minutus L. на рыбоводных прудах Араратской равнины. Биологический журнал Армении, т. 60, № 1-2, с. 34–44.
Пукинский, Ю. Б. (2003) Гнездовая жизнь птиц бассейна реки Бикин. СПб.: Издательство СПбГУ, 267 с.
Archer, T. (2020) XC498497. Little Bittern — Ixobrychus minutes. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/498497 (accessed 20.05.2022)
Arias, H. (2020) XC716774. Least Bittern — Ixobrychus exilis. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/716774 (accessed 20.05.2022)
Austin, O. L., Kuroda, N. (1953) The birds of Japan, their status and distribution. Bulletin of the Museum of Comparative Zoology, vol. 104, no. 4, pp. 279–637.
Benassi, G., Battisti, C., Luiselli, L., Boitani, L. (2009) Area-sensitivity of three reed bed bird species breeding in Mediterranean marshland fragments. Wetlands Ecology and Management, vol. 17, no. 5, pp. 555–564.
Birder, P. (2014) XC187961. Least Bittern — Ixobrychus exilis. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/187961 (accessed 20.05.2022)
Bruggen, J. (2017) XC373096. Little Bittern — Ixobrychus minutes. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/373096 (accessed 20.05.2022)
Calvet, J. (2015) XC263294. Little Bittern — Ixobrychus minutes. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/263294 (accessed 20.05.2022)
Celmins, A. (2008) XC641634. Little Bittern — Ixobrychus minutes. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/641634 (accessed 20.05.2022)
Cockcroft, T. (2020) XC596092. Little Bittern — Ixobrychus minutes. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/596092 (accessed 20.05.2022)
Cramp, S., Simmons, K. E. L., Ferguson-Lees, I. J. et al. (eds.). (1977) Handbook of the birds of Europe, the Middle East and North Africa: The birds of the Western Palearctic. Vol. 1. Ostrich to ducks. Oxford: Oxford University Press, 722 p.
Davison, D. (2020) XC592091. Black-backed Bittern — Ixobrychus dubius. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/592091 (accessed 20.05.2022)
del Hoyo, J., Elliot, A., Sargatal, J. (eds.). (1992) Handbook of the Birds of the World. Vol. 1. Ostrich to Ducks. Barselona: Lynx Editions Publ., 640 p.
Flis, A. (2016) Nest types and nest-site selection of the Little Bittern Ixobrychus minutus breeding in fishpond habitat in south-eastern Poland. Polish Journal of Ecology, vol. 64, no. 2, pp. 268–276. https://doi.org/10.3161/15052249PJE2016.64.2.010
Flis, A. (2022) Vocal activity of Little Bittern (Ixobrychus m. minutus) during the Breeding Season. The Waterbird Society, vol. 45, no. 2, pp. 213–217. https://doi.org/10.1675/063.045.0212
Flis, A., Gwiazda, R., Krztoń, W. (2020) Sex differences in Little Bittern Ixobrychus m. minutus parental care: a pilot study. Bird Study, vol. 67, no. 3, pp. 393–397. https://doi.org/10.1080/00063657.2020.1863334
Gibbs, J. P., Reid, F. A., Melvin, S. M. (1992) Least Bittern. In: A. Poole, P. Stettenheim, F. Gill (eds.). The Birds of North America. No. 17. Philadelphia: The Academy of Natural Sciences Publ. https://doi.org/10.2173/tbna.17.p
Graff, J. (2012) XC165148. Black-backed Bittern — Ixobrychus dubius. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/165148 (accessed 20.05.2022)
Graves, T. G. (2021) XC656437. Least Bittern — Ixobrychus exilis. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/656437 (accessed 20.05.2022)
Hering, J., Barthel, P. H., Eilts, H.-J. et al. (2013) Die Chinadommel Ixobrychus sinensis am Roten Meer in Ägypten – erste Nachweise eines übersehenen westpaläarktischen Brutvogels. Limicola, vol. 26, pp. 253–278.
Hesse, C. (2009) XC57871. Little Bittern — Ixobrychus minutus payesii. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/57871 (accessed 20.05.2022)
Jeff, C. (2022) XC733344. Yellow Bittern — Ixobrychus sinensis. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/733344 (accessed 22.06.2022)
Krabbe, N. (2015) XC251028. Least Bittern — Ixobrychus exilis. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/251028 (accessed 20.05.2022)
Kushlan, J. A., Hancock, J. A. (2005) The herons. Bird Families of the World. New York: Oxford University Press, 433 p.
Langley, C. H. (1983) Biology of the little bittern in the Southwestern Cape. Ostrich, vol. 54, no. 2, pp. 83–94.
Lastukhin, A. (2015) XC267050. Von Schrenck’s Bittern — Ixobrychus eurhythmus. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/267050 (accessed 20.05.2022)
Maffezzoli, L. (2021) XC656126. Little Bittern — Ixobrychus minutes. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/656126 (accessed 20.05.2022)
Mark, T. (1997) XC93920. Von Schrenck’s Bittern — Ixobrychus eurhythmus. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/93920 (accessed 20.05.2022)
Moore, J. V. (2003) XC257294. Least Bittern — Ixobrychus exilis peruvianus. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/257294 (accessed 20.05.2022)
Overholtz, R. (2021) XC658064. Least Bittern — Ixobrychus exilis. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/658064 (accessed 20.05.2022)
Piot, B. (2021). XC663562. Yellow Bittern — Ixobrychus sinensis. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/663562 (accessed 20.05.2022)
Polak, M. (2006) Booming activity of male Bitterns Botaurus stellaris in relation to reproductive cycle and harem size. Ornis Fennica, vol. 83, no. 1, pp. 27–33.
Randler, C. (2006) Extrapair paternity and hybridization in birds. Journal of Avian Biology, vol. 37, no. 1, pp. 1–5. https://doi.org/10.1111/j.2006.0908-8857.03592.x
Raveendran, N. K. C. (2021) XC666521. Yellow Bittern — Ixobrychus sinensis. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/666521 (accessed 20.05.2022)
Roché, J. C. (1996) Bird Songs and Calls of Britain and Europe on 4 CDs. Vol. 1. Divers to Raptors. [S. l]: WildSounds. CD-ROM.
Uchida, H., Matsuda, T. (1990) Colonial Breeding of the Yellow Bittern Ixobrychus sinensis. Japanese Journal of Ornithology, vol. 39, no. 2, pp. 53–61.
Ueda, K. (1996) Nest site preference and coloniality in the Yellow Bittern Ixobrychus sinensis. Strix, vol. 14, pp. 55–63.
Xeno-canto Foundation. (2022) [Online]. Available at: https://xeno-canto.org/ (accessed 20.05.2022)
Wroza, S. (2017) XC381528. Little Bittern — Ixobrychus minutus. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/381528 (accessed 20.05.2022)
Wulf, T. (2016) XC319945. Von Schrenck’s Bittern — Ixobrychus eurhythmus. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/319945 (accessed 20.05.2022)
REFERENCES
Archer, T. (2020) XC498497. Little Bittern — Ixobrychus minutes. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/498497 (accessed 20.05.2022) (In English)
Arias, H. (2020) XC716774. Least Bittern — Ixobrychus exilis. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/716774 (accessed 20.05.2022) (In English)
Austin, O. L., Kuroda, N. (1953) The birds of Japan, their status and distribution. Bulletin of the Museum of Comparative Zoology, vol. 104, no. 4, pp. 279–637. (In English)
Benassi, G., Battisti, C., Luiselli, L., Boitani, L. (2009) Area-sensitivity of three reed bed bird species breeding in Mediterranean marshland fragments. Wetlands Ecology and Management, vol. 17, no. 5, pp. 555–564. (In English)
Berezovikov, N. N., Lukhtanov, A. G. (2014) O gnezdovanii maloj vypi Ixobrychus minutus v Zajsanskoj kotlovine [About breeding of the Little Bittern Ixobrychus minutus in Zaisan Depression]. Russkij ornitologicheskij zhurnal — The Russian Journal of Ornithology, vol. 23, no. 1057, pp. 3143–3144. (In Russian)
Birder, P. (2014) XC187961. Least Bittern — Ixobrychus exilis. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/187961 (accessed 20.05.2022). (In English)
Bruggen, J. (2017) XC373096. Little Bittern — Ixobrychus minutes. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/373096 (accessed 20.05.2022). (In English)
Calvet, J. (2015) XC263294. Little Bittern — Ixobrychus minutes. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/263294 (accessed 20.05.2022). (In English)
Celmins, A. (2008) XC641634. Little Bittern — Ixobrychus minutes. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/641634 (accessed 20.05.2022). (In English)
Cockcroft, T. (2020) XC596092. Little Bittern — Ixobrychus minutes. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/596092 (accessed 20.05.2022). (In English)
Cramp, S., Simmons, K. E. L., Ferguson-Lees, I. J. et al. (eds.). (1977) Handbook of the birds of Europe, the Middle East and North Africa: The birds of the Western Palearctic. Vol. 1. Ostrich to ducks. Oxford: Oxford University Press, 722 p. (In English)
Davison, D. (2020) XC592091. Black-backed Bittern — Ixobrychus dubius. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/592091 (accessed 20.05.2022). (In English)
del Hoyo, J., Elliot, A., Sargatal, J. (eds.). (1992) Handbook of the Birds of the World. Vol. 1. Ostrich to Ducks. Barselona: Lynx Editions Publ., 640 p. (In English)
Dolgushin, I. A. (1960) Ptitsy Kazakhstana. T. 1 [Birds of Kazakhstan. Vol. 1]. Alma-Ata: Academy of Sciences of Kazakh SSR Publ., 437 p. (In Russian)
Flis, A. (2016) Nest types and nest-site selection of the Little Bittern Ixobrychus minutus breeding in fishpond habitat in south-eastern Poland. Polish Journal of Ecology, vol. 64, no. 2, pp. 268–276. https://doi.org/10.3161/15052249PJE2016.64.2.010 (In English)
Flis, A. (2022) Vocal activity of Little Bittern (Ixobrychus m. minutus) during the Breeding Season. The Waterbird Society, vol. 45, no. 2, pp. 213–217. https://doi.org/10.1675/063.045.0212 (In English)
Flis, A., Gwiazda, R., Krztoń, W. (2020) Sex differences in Little Bittern Ixobrychus m. minutus parental care: a pilot study. Bird Study, vol. 67, no. 3, pp. 393–397. https://doi.org/10.1080/00063657.2020.1863334 (In English)
Gamova, T. V., Surmach, S. G., Burkovskij, O. A. (2011a) Novye svedeniya o gnezdovoj biologii amurskogo volchka Ixobrychus eurythmus (Swinhoe, 1873) v Primorskom krae [The new data of breeding of Schrenck’s Bittern Ixobrychus eurhythmus in Primorsky Krai]. Vestnik DVO RAN — Vestnik of Far Eastern Branch of Russian Academy of Sciences, no. 4, pp. 14–22. (In Russian)
Gamova, T. V., Surmach, S. G., Burkovskij, O. A. (2011b) Pervoe svidetel’stvo gnezdovaniya kitajskogo volchka Ixobrychus sinensis (J. F. Gmelin, 1789) na yuge Dal’nego Vostoka [The first evidence of breeding of the Yellow Bittern Ixobrychus sinensis in Russian Far East]. Russkij ornitologicheskij zhurnal zhurnal — The Russian Journal of Ornithology, vol. 20, no. 676, pp. 1487–1496. (In Russian)
Gamova, T. V., Surmach, S. G., Burkovskij, O. A., Korobov, D. V. (2022) Pervyj sluchaj gnezdovaniya malogo volchka Ixobrychus minutus i gibridov I. minutus s I. sinensis na Dal’nem Vostoke Rossii [The first case of breeding of little bittern Ixobrychus minutus and hybrids of I. minutus with I. sinensis in the Russian Far East]. Amurskij zoologicheskij zhurnal — Amurian Zoological Journal, vol. XIV, no. 3, pp. 492–515. https://doi.org/10.33910/2686-9519-2022-14-3-492-515 (In Russian)
Gibbs, J. P., Reid, F. A., Melvin, S. M. (1992) Least Bittern. In: A. Poole, P. Stettenheim, F. Gill (eds.). The Birds of North America. No. 17. Philadelphia: The Academy of Natural Sciences Publ. https://doi.org/10.2173/tbna.17.p (In English)
Glushchenko, Yu. N., Sotnikov, V. N., Korobov, D. V. et al. (2018) Ornitologicheskie nablyudeniya v Primorskom krae v 2017 godu [Ornithological observations in the Primorsky krai in 2017]. Russkij ornitologicheskij zhurnal — The Russian Journal of Ornithology, vol. 27, no. 1588, pp. 1485–1495. (In Russian)
Glushchenko, Yu. N., Sotnikov, V. N., Vyalkov, A. V et al. (2016) Novye dannye o gnezdovanii kitajskogo volchka Ixobrychus sinensis v Primorskom krae [New data on the breeding of the Yellow Bittern Ixobrychus sinensis in Primorsky krai]. Russkij ornitologicheskij zhurnal — The Russian Journal of Ornithology, vol. 25, no. 1325, pp.3033–3038. (In Russian)
Graff, J. (2012) XC165148. Black-backed Bittern — Ixobrychus dubius. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/165148 (accessed 20.05.2022). (In English)
Graves, T. G. (2021) XC656437. Least Bittern — Ixobrychus exilis. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/656437 (accessed 20.05.2022). (In English)
Hering, J., Barthel, P. H., Eilts, H.-J. et al. (2013) Die Chinadommel Ixobrychus sinensis am Roten Meer in Ägypten – erste Nachweise eines übersehenen westpaläarktischen Brutvogels. Limicola, vol. 26, pp. 253–278. (In German)
Hesse, C. (2009) XC57871. Little Bittern — Ixobrychus minutus payesii. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/57871 (accessed 20.05.2022). (In English)
Jeff, C. (2022) XC733344. Yellow Bittern — Ixobrychus sinensis. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/733344 (accessed 22.06.2022). (In English)
Koshelev, A. I. (1977) K rasprostraneniyu i ekologii bol’shoj (Botaurus stellaris L.) i maloj (Ixobrychus minutus L.) vypej v Zapadnoj Sibiri [On the distribution and ecology of Bittern (Botaurus stellaris L.) and Little Bittern (Ixobrychus minutus L.) in Western Siberia. In: Fauna i sistematika pozvonochnykh Sibiri [Fauna and systematics of vertebrates of Siberia]. Novosibirsk: Nauka Publ., pp. 280–285. (In Russian)
Krabbe, N. (2015) XC251028. Least Bittern — Ixobrychus exilis. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/251028 (accessed 20.05.2022). (In English)
Kushlan, J. A., Hancock, J. A. (2005) The herons. Bird Families of the World. New York: Oxford University Press, 433 p. (In English)
Langley, C. H. (1983) Biology of the little bittern in the Southwestern Cape. Ostrich, vol. 54, no. 2, pp. 83–94. (In English)
Lastukhin, A. (2015) XC267050. Von Schrenck’s Bittern — Ixobrychus eurhythmus. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/267050 (accessed 20.05.2022). (In English)
Lopatin, V. V., Karpov, F. F., Klejmenov, S. V. (1992) Biologiya volchka (Ixobrychus minutus) na yugo-vostoke Kazakhstana [Biology of the Little Bittern (Ixobrychus minutus) in southeast Kazakhstan]. Russkij ornitologicheskij zhurnal — The Russian Journal of Ornithology, vol. 1, no. 2, pp. 227–234. (In Russian)
Maffezzoli, L. (2021) XC656126. Little Bittern — Ixobrychus minutes. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/656126 (accessed 20.05.2022). (In English)
Mark, T. (1997) XC93920. Von Schrenck’s Bittern — Ixobrychus eurhythmus. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/93920 (accessed 20.05.2022). (In English)
Melikyan, K. A. (2008) Biologiya gnezdovaniya maloj vypi Ixobrychus minutus L. na rybovodnykh prudakh Araratskoj ravniny [The nesting biology of the Little Bittern Ixobrychus minutus L. in fish-farming ponds of the Ararat Plain]. Biologicheskij zhurnal Armenii — Biological Journal of Armenia, vol. 60, no. 1-2, pp. 34–44. (In Russian)
Moore, J. V. (2003) XC257294. Least Bittern — Ixobrychus exilis peruvianus. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/257294 (accessed 20.05.2022). (In English)
Overholtz, R. (2021) XC658064. Least Bittern — Ixobrychus exilis. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/658064 (accessed 20.05.2022). (In English)
Piot, B. (2021). XC663562. Yellow Bittern — Ixobrychus sinensis. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/663562 (accessed 20.05.2022). (In English)
Polak, M. (2006) Booming activity of male Bitterns Botaurus stellaris in relation to reproductive cycle and harem size. Ornis Fennica, vol. 83, no. 1, pp. 27–33. (In English)
Pukinskij, Yu. B. (2003) Gnezdovaya zhizn’ ptitc bassejna reki Bikin [Breeding life of birds in the Bikin River Basin]. Saint Petersburg: Saint Petersburg State University Publ., 267 p. (In Russian)
Randler, C. (2006) Extrapair paternity and hybridization in birds. Journal of Avian Biology, vol. 37, no. 1, pp. 1–5. https://doi.org/10.1111/j.2006.0908-8857.03592.x (In English)
Raveendran, N. K. C. (2021) XC666521. Yellow Bittern — Ixobrychus sinensis. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/666521 (accessed 20.05.2022). (In English)
Roché, J. C. (1996) Bird Songs and Calls of Britain and Europe on 4 CDs. Vol. 1. Divers to Raptors. [S. l]: WildSounds. CD-ROM. (In English)
Uchida, H., Matsuda, T. (1990) Colonial Breeding of the Yellow Bittern Ixobrychus sinensis. Japanese Journal of Ornithology, vol. 39, no. 2, pp. 53–61. (In English)
Ueda, K. (1996) Nest site preference and coloniality in the Yellow Bittern Ixobrychus sinensis. Strix, vol. 14, pp. 55–63. (In English)
Xeno-canto Foundation. (2022) [Online]. Available at: https://xeno-canto.org/ (accessed 20.05.2022). (In English)
Wroza, S. (2017) XC381528. Little Bittern — Ixobrychus minutus. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/381528 (accessed 20.05.2022). (In English)
Wulf, T. (2016) XC319945. Von Schrenck’s Bittern — Ixobrychus eurhythmus. Xeno-canto Foundation. [Online]. Available at: https://xeno-canto.org/319945 (accessed 20.05.2022). (In English)
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