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Factors affecting feeding activity of grey herons in a reservoir during the breeding season

  • Choi, Yu-Seong (National Institute of Biological Resources) ;
  • Yoo, Jeong-Chil (Korea Institute of Ornithology and Department of Biology, Kyung Hee University)
  • 투고 : 2011.07.04
  • 심사 : 2011.09.05
  • 발행 : 2011.12.01

초록

To examine factors affecting feeding efficiency of grey herons (Ardea cinerea), the foraging behavior was studied at a reservoir in Asan city, Chungcheongnam-do, South Korea during the breeding seasons (from April to July) of 2006 and 2007. Four factors (age of foraging birds, time of day, breeding stage, and microhabitat type) were analyzed. Adults were more efficient foragers than recently fledged juveniles, and they had a higher success rate than juveniles. About half of the adults caught large prey, whereas most juveniles caught only small prey. Adult grey herons had different feeding efficiency according to the breeding stage. Pecking and capture rates were high during the late period (fledging stage), and biomass intake rates were high during the early (incubating stage) and late periods. However, time of day had no significant effect on foraging activity of adult grey herons. Feeding activities of adult grey herons also showed significant variation among microhabitat types. Pecking and capture rates were higher in the submerged plants area, but capture success rate and biomass intake rate were not different according to microhabitat type.

키워드

참고문헌

  1. Bayer RD. 1985. Bill length of herons and egrets as an estimator of prey size. Colon Waterbirds 8: 104-109. https://doi.org/10.2307/1521059
  2. Brandt CA. 1984. Age and hunting success in the brown pelican: inferences of skill and patch choice on foraging efficiency. Oecologia 62: 132-137. https://doi.org/10.1007/BF00377386
  3. Burger J, Gochfeld M. 1989. Age differences in Cattle Egrets Bubulcus ibis, foraging with wild ungulates in Kenya. Ardea 77: 201-204.
  4. Campos F, Lekuona JM. 2001. Are rice fields a suitable foraging habitat for Purple Herons during the breeding season? Waterbirds 24: 450-452. https://doi.org/10.2307/1522081
  5. Cezilly F, Boy V. 1988. Age related differences in foraging Little Egrets, Egretta garzetta. Colon Waterbirds 11: 100-106. https://doi.org/10.2307/1521175
  6. Choi YS, Kwon IK, Yoo JC. 2007. Foraging habitat preferences of herons and egrets. J Ecol Field Biol 30: 237-244. https://doi.org/10.5141/JEFB.2007.30.3.237
  7. Choi YS, Kwon IK, Yoo JC. 2008. A study of feeding methods in five species of herons and egrets in Korea. J Ecol Field Biol 31: 147-151. https://doi.org/10.5141/JEFB.2008.31.2.147
  8. Dimalexis A, Pyrovetsi M. 1997. Effect of water level fluctuations on wading bird foraging habitat use at an irrigation reservoir, lake Kerkini, Greece. Colon Waterbirds 20: 244-252. https://doi.org/10.2307/1521690
  9. Dimalexis A, Pyrovetsi M, Sgardelis S. 1997. Foraging ecology of the Grey Heron (Ardea cinerea), Great Egret (Ardea alba) and Little Egret (Egretta garzetta) in response to habitat, at 2 Greek wetlands. Colon Waterbirds 20: 261-272. https://doi.org/10.2307/1521692
  10. Draulans D. 1987. The effect of prey density on foraging behaviour and success of adult and first-year Grey Herons (Ardea cinerea). J Anim Ecol 56: 479-493. https://doi.org/10.2307/5062
  11. Draulans D, Hannon J. 1988. Distribution and foraging behavior of Grey Herons Ardea cinerea in adjacent tidal and non-tidal areas. Ornis Scand 19: 297-304. https://doi.org/10.2307/3676725
  12. Draulans D, van Vessem J. 1985. Age-related differences in the use of time and space by radio-tagged Grey Herons (Ardea cinerea) in winter. J Anim Ecol 54: 771-780. https://doi.org/10.2307/4377
  13. Erwin RM. 1985. Foraging decisions, patch use, and seasonality in egrets (Aves: Ciconiiformes). Ecology 66: 837-844. https://doi.org/10.2307/1940545
  14. Erwin RM, Hafner H, Dugan P. 1985. Differences in the feeding behavior of Little Egrets (Egretta garzetta) in two habitats in the Camargue, France. Wilson Bull 97: 534-538.
  15. Fasola M. 1984. Activity rhythm and feeding success of nesting Night Herons Nycticorax nycticorax. Ardea 72: 217-222.
  16. Frederick PC, Spalding MG. 1994. Factors affecting reproductive success of wading birds (Ciconiiformes) in the Everglades ecosystem. In: Everglades: The Ecosystem and Its Restoration (Davis SM, Ogden JC, eds). St. Lucie Press, Boca Raton, FL, pp 659-691.
  17. Hafner H, Dugan PJ, Boy V. 1986. Use of artificial and natural wetlands as feeding sites by Little Egrets (Egretta garzetta L.) in the Camarge, southern France. Colon Waterbirds 9: 149-154. https://doi.org/10.2307/1521207
  18. Hafner H, Dugan PJ, Kersten M, Pineau O, Wallace JP. 1993. Flock feeding and food intake in Little Egrets Egretta garzetta and their effects on food provisioning and reproductive success. Ibis 135: 25-32.
  19. Kersten M, Britton RH, Dugan PJ, Hafner H. 1991. Flock feeding and food intake in Little Egrets: the effects of prey distribution and behaviour. J Anim Ecol 60: 241-252. https://doi.org/10.2307/5457
  20. Kushlan JA, Hancock JA. 2005. The Herons. Oxford University Press, New York.
  21. Lee WS, Koo TH, Park JY. 2000. A Field Guide to the Birds of Korea. LG Evergreen Foundation, Seoul. (in Korean)
  22. Lo PL, Fordham RA. 1986. Seasonal and diurnal time budgets and feeding intensity of the White-faced Heron in pasture. Notornis 33: 233-245.
  23. Maccarone AD, Brzorad JN. 2002. Foraging patterns of breeding egrets at coastal and interior locations. Water-birds 25: 1-7. https://doi.org/10.1675/1524-4695(2002)025[0001:FPOBEA]2.0.CO;2
  24. Maccarone AD, Parsons KC. 1994. Factors affecting the use of a freshwater and an estuarine foraging site by egrets and ibises during the breeding season in New York City. Colon Waterbirds 17: 60-68. https://doi.org/10.2307/1521382
  25. Maekawa S, Sawara Y. 1996. Age-related difference in bill length of the Grey Heron Ardea cinerea jouyi and estimation of prey size using bill length. Jpn J Ornithol 45: 183-186. https://doi.org/10.3838/jjo.45.183
  26. Marchetti K, Price T. 1989. Differences in the foraging of juvenile and adult birds: the importance of developmental constraints. Biol Rev 64: 51-70. https://doi.org/10.1111/j.1469-185X.1989.tb00638.x
  27. Master TL. 1992. Composition, structure, and dynamics of mixed-species foraging aggregations in a southern New Jersey salt marsh. Colon Waterbirds 15: 66-74. https://doi.org/10.2307/1521355
  28. Matsunaga K. 2000. Effects of tidal cycle on the feeding activity and behavior of Grey Herons in a tidal flat in Notsuke Bay, northern Japan. Waterbirds 23: 226-235.
  29. Moser ME. 1986. Prey profitability for adult Grey Herons Ardea cinerea and the constraints on prey size when feeding young nestlings. Ibis 128: 392-405.
  30. Papakostas G, Kazantzidis S, Goutner V, Charalambidou I. 2005. Factors affecting the foraging behavior of the Squacco Heron. Waterbirds 28: 28-34. https://doi.org/10.1675/1524-4695(2005)028[0028:FATFBO]2.0.CO;2
  31. Quinney TE, Smith PC. 1980. Comparative foraging behaviour and efficiency of adult and juvenile Great Blue Herons. Can J Zool 58: 1168-1173. https://doi.org/10.1139/z80-161
  32. Richardson AJ, Taylor IR, Growns JE. 2001. The foraging ecology of egrets in rice fields in southern New South Wales, Australia. Waterbirds 24: 255-264. https://doi.org/10.2307/1522039
  33. Richner H. 1986. Winter feeding strategies of individually marked herons. Anim Behav 34: 881-886. https://doi.org/10.1016/S0003-3472(86)80074-4
  34. Sato N, Maruyama N. 1996. Foraging site preference of Intermediate Egrets Egretta intermedia during the breeding season in the eastern part of the Kanto Plain, Japan. J Yamashina Inst Ornithol 28: 19-34. https://doi.org/10.3312/jyio1952.28.19
  35. Sawara Y, Azuma N, Hino K, Fukui K, Demachi G, Sakuyama M. 1990. Feeding activity of Grey Heron Ardea cinerea in tidal and non-tidal environment. Jpn J Ornithol 39: 45-52. https://doi.org/10.3838/jjo.39.45
  36. StatSoft Inc. 2004. STATISTICA for Windows. Version 7. StatSoft Inc., Tulsa, OK.
  37. Strong AM, Bancroft GT, Jewell SD. 1997. Hydrological constraints on Tricolored Heron and Snowy Egret resource use. Condor 99: 894-905. https://doi.org/10.2307/1370140
  38. Wiggins DA. 1991. Foraging success and aggression in solitary and group-feeding Great Egrets (Casmerodius albus). Colon Waterbirds 14: 176-179. https://doi.org/10.2307/1521508
  39. Zar JH. 1999. Biostatistical Analysis. 4th ed. Prentice Hall International, London.

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