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Muralidharan, S.; Jayakumar, R.; Vishnu, G. Heavy metals in feathers of six species of birds in the district Nilgiris, India. Bulletin of Environmental Contamination and Toxicology. 2004, 73 (2): 285–291. PMID 15386041. S2CID 26914063. doi:10.1007/s00128-004-0425-x.
M. K. Mohanty; S. P. Bhunya. Karyological studies in four species of ardeid birds (Ardeldae, Ciconiiformes). Genetica. 1990, 81 (3): 211–214. S2CID 29647762. doi:10.1007/BF00360867.
Umadevi K; R. Madhavi. Observations on the morphology and life-cycle of Procerovum varium (Onji & Nishio, 1916) (Trematoda: Heterophyidae). Systematic Parasitology. 2000, 46 (3): 215–225. PMID 10845654. S2CID 4497926. doi:10.1023/A:1006398205390.
Muralidharan, S.; Jayakumar, R.; Vishnu, G. Heavy metals in feathers of six species of birds in the district Nilgiris, India. Bulletin of Environmental Contamination and Toxicology. 2004, 73 (2): 285–291. PMID 15386041. S2CID 26914063. doi:10.1007/s00128-004-0425-x.
Clements, J. F.; Schulenberg, T. S.; Iliff, M. J.; Billerman, S. M.; Fredericks, T. A.; Gerbracht, J. A.; Lepage, D.; Sullivan, B. L.; Wood, C. L. The eBird/Clements checklist of Birds of the World: v2021.. 2021 [2022-08-19]. (原始内容存档于2022-03-12).