Abstract
The effectiveness of tartar emetic in causing forced regurgitation was tested in hooded crow (Corvus corone cornix) nestlings from a protected area in western Poland. Tartar emetic was highly effective in causing regurgitation. In 84 of 98 cases (85.7%), nestlings responded by vomiting reflexes, producing 81 food samples (82.6% of all cases). After the procedure no bird was observed to develop negative symptoms. Survival of the birds subjected to forced regurgitation was higher than in the control group (no emetic), which is probably related to the administration of glucose to the birds after enforced regurgitation. Even repeated administration of tartar emetic was without negative effects on the nestlings. The use of tartar emetic does not require frequent visits at the nests, limiting the probability of cannibalistic behaviour and nest predation.
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References
Berrow SD, Kelly TC, Myers AA (1992) The diet of coastal hooded crows Corvus corone cornix. Ecography 15:337–346
Brensing D (1977) Nahrungsökologische Untersuchungen an Zugvögeln in einem südwestdeutschen Durchzugsgebiet während des Wegzuges. Vogelwarte 29:44–56
Chaney SG, Kare MR (1966) Emesis in birds. J Am Vet Med Assoc 149:938–943
Choiński A (2000) Characterization of the water levels of the Warta river near Kostrzyn. Biol Bull Poznań 37:189–204
Cox DR (1959) The analysis of exponentially distributed life-times with two types of failures. J R Stat Soc 21:411–421
Cox DR (1972) Regression models and life tables. J R Stat Soc 34:187–220
Cramp S (1998) The complete birds of Western Palearctic on CD-ROM. Oxford University Press, Oxford
Ford HA, Forde N, Harkington S (1982) Non-destructive methods to determine the diets of birds. Cotella 6:6–10
Gionfriddo JP, Best LB, Giesler BJ (1995) A saline-flushing technique for determining the diet of seed-eating birds. Auk 112:780–782
Grimmet RFA, Jones TA (1989) Important bird areas in Europe. ICBP Publication no. 9, ICBP, Cambridge
Johnson EJ, Best LB, Heagy PA (1980) Food sampling biases associated with the ligature method. Condor 82:186–192
Johnson MD, Ruthrauff DR, Jones JG, Tietz JR, Robinson JK (2002) Short-term effects of tartar emetic on resighting rates of migratory songbirds in the non-breeding season. J Field Ornithol 73:191–196
Kleinbaum DG (1996) Survival analysis. Springer, Berlin Heidelberg New York
Lederer RJ, Crane R (1978) The effects of emetics on wild birds. North American Bird Bander 3:4–5
Lockie JD (1956) The food and feeding behaviour of the jackdaw, rook and carrion crow. J Anim Ecol 25:421–428
Major RE (1990) The effect of human observers on the intensity of nest predation. Ibis 132:608–612
Mantel N (1966) Evaluation of survival data and two new rank order statistics arising in its considerations. Cancer Chemother Rep 50:163–170
Moody DT (1970) A method for obtaining food samples from insectivorous birds. Auk 87:579
Morrison ML, Ralph CJ, Verner J, Jehl JR Jr (eds) (1990) Avian foraging: theory, methodology, and applications. Stud Avian Biol 13:134–143
Poulin B, Lefebvre G (1995) Additional information on the use of tartar emetic in determining the diet of tropical birds. Condor 97:897–902
Prys-Jones RP, Schifferly L, Macdonald DW (1974) The use of an emetic in obtaining food samples from passerines. Ibis 116:90–94
Robert M, Cloutier L, Laporte P (1997) The summer diet of the yellow rail in southern Quebec. Wilson Bull 109:702–710
Rosenberg KV, Cooper RJ (1990) Approaches to avian diet analysis. Stud Avian Biol 13:80–90
Simmons RE, Avery DM, Avery G (1991) Biases in diets determined from pellets and remains: correction factors for a mammal and bird-eating raptor. J Raptor Res 25:63–67
Sokal RR, Rohlf FJ (1995) Biometry, 3rd edn. Freeman, New York
Tomback DF (1975) An emetic technique to investigate food preferences. Auk 92:58l–583
Tryjanowski P, Kuźniak S (1999) Effect of research activity on the success of red-backed shrike Lanius collurio nests. Ornis Fennica 76:41–43
Tryjanowski P, Karg MK, Karg J (2003) Food of the red-backed shrike Lanius collurio: a comparison of three methods of diet analysis. Acta Ornithol 38:59–64
Valera F, Gutiérrez JE, Barrios R (1997) Effectiveness, biases and mortality in the use of apomorphine for determining the diet of granivorous passerines. Condor 99:765–772
Verbeek NAM (1998) Food of nestling northwestern crows. Wilson Bull 110:483–488
Wittenberg J (1968) Freilanduntersuchungen zu Brutbiolologie und Verhalten der Rabenkrähe Corvus corone corone. Zool Jb Syst 95:16–146
Zach R, Falls JB (1976) Bias and mortality in the use of tartar emetic to determine the diet of ovenbirds (Aves: Parulidae). Can J Zool 54:1599–1603
Zduniak P, Kuczyński L (2003) Breeding biology of the hooded crow Corvus corone cornix in Warta river valley (W Poland). Acta Ornithol 38:143–150
Acknowledgements
The author wishes to thank K. Wypychowski, head of the National Park Ujście Warty, for his consent and support of the study. Thanks also go to J.Z. Kosicki, L. Kuczyński, A. Skoracka, P. Czechowski, M. Czechowska, B. Gołdyn and Sz. Jędrzejewski for their help in field work. Iwould further like to thank Romuald Surmacki, who sponsored some of the field equipment, and Piotr Tryjanowski for advice and discussions. The study was performed in conformity with local legal solutions and on consent of the local Ethical Committee NR 58/2003.
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Zduniak, P. Forced regurgitation with tartar emetic as an effective and safe method to study diet composition in hooded crow nestlings. Eur J Wildl Res 51, 122–125 (2005). https://doi.org/10.1007/s10344-005-0090-3
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DOI: https://doi.org/10.1007/s10344-005-0090-3