VezinaCharleboisThomas2001

Référence

Vezina, F., Charlebois, D., Thomas, D.W. (2001) An automated system for the measurement of mass and identification of birds at perches. Journal of Field Ornithology, 72(2):211-220.

Résumé

Studies on small wintering birds often monitor body mass variation over days or seasons. Typically, birds are weighed manually or data are obtained using an electronic balance which displays the bird's mass during visits to a feeder. The problem with these techniques is that they require the manipulation of the animals and/or are labor intensive. We built an automated system which combines a transponder-based radio identification device (RID) and an electronic balance fitted with a weighing perch. This setup permits daily mass variation in birds to be monitored automatically without human presence. The system provides reliable estimates of inert masses (r2 = 1). W'e also used it to monitor bird masses in an aviary. For five days birds were caught periodically and weighed manually to measure their "real" masses for comparison with the system's estimates. Again a strong relationship was found between calculated and real masses (r2 = 0.92 and r2 = 0.89 using two different balances). This system offers great promise and could be adapted to many forms of field work.

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@ARTICLE { VezinaCharleboisThomas2001,
    AUTHOR = { Vezina, F. and Charlebois, D. and Thomas, D.W. },
    TITLE = { An automated system for the measurement of mass and identification of birds at perches },
    JOURNAL = { Journal of Field Ornithology },
    YEAR = { 2001 },
    VOLUME = { 72 },
    PAGES = { 211-220 },
    NUMBER = { 2 },
    NOTE = { 02738570 (ISSN) Cited By (since 1996): 2 Export Date: 26 April 2007 Source: Scopus Language of Original Document: English Correspondence Address: Ve?zina, F.; Grp. Rech. Ecologie, Nutr. E.; De?partement de Biologie; Universite? de Sherbrooke Sherbrooke, Que?., J1K 2R1, Canada References: Bednekoff, P.A., Biebach, H., Krebs, J.R., Great Tit fat reserves under unpredictable temperatures (1994) J. Avian. Biol., 25, pp. 156-160; Houston, A.I., Optimizing fat reserves over the entire winter: A dynamic model (1994) Oikos, 71, pp. 408-415; Blem, C.R., Avian energy storage (1990) Curr. Ornithol., 7, pp. 59-113; Ekman, J., Lilliendaiil, K., Using priority to food access: Fattening strategies in dominance-structured Willow Tit (Parus montanus) flocks (1993) Behav. Ecol., 4, pp. 233-238; Graedel, S.K., Loveland, R.E., Seasonal and diurnal mass variation in Black-capped Chickadees and White-throated Sparrows (1995) Wilson Bull., 107, pp. 723-727; Haftorn, S., Seasonal and diurnal body weight variation in titmice, based on analyses of individual birds (1989) Wilson Bull., 101, pp. 217-235; The diurnal body weight cycle in titmice Parus spp (1992) Ornis Scand., 23, pp. 435-443; Hake, H., Fattening strategies in dominance-structured Greenfinch (Carduelis chloris) flocks in winter (1996) Behav. Ecol. Sociobiol., 39, pp. 71-76; Helms, C.W., Food, fat and feathers (1968) Am. Zool., 8, pp. 151-167; Houston, A.I., Mcnamara, J.M., A theoretical investigation of the fat reserves and mortality levels of small birds in winter (1993) Ornis Scand., 24, pp. 205-219; Jones, G., The use of precision electronic balances to monitor short-term changes in the body mass of birds (1987) Comp. Biochem. Physiol., 87 A, pp. 287-293; Kerry, K., Clarke G Else, J., The use of an automated weighing and recording system for the study of the biology of Ade?lie Penguins (Pygoscelis adeliae) (1993) Proc. NIPR Symp. Polar Biol., 6, pp. 62-75; King, J.R., Adaptive periodic fat storage by birds (1972) Proc. XVth Internatl. Ornithol. Cong., pp. 200-217; Farner, D.S., The adaptive role of winter fattening in White-crowned Sparrow with comment on its regulation (1966) Am. Nat., 100, pp. 403-418; Koivula, K., Orell, M., Rytka?nen, S., Lathi, K., Fatness, sex and dominance; seasonal and daily body mass changes in Willow Tits (1995) J. Avian Biol., 26, pp. 209-216; Kontogiannis, J.E., Day and night change in body weight of the White-throated Sparrow, Zonotrichia albicollis (1967) Auk, 84, pp. 390-395; Lehikoinen, E., Seasonality of the daily weight cycle in wintering passerines and its consequences (1987) Ornis Scand., 18, pp. 216-226; Maho Y, L.E., Gendner, J.P., Challet, E., Bost, C.A., Gilles, J., Verdon, C., Plumere?, C., Handrich, V., Undisturbed breeding penguins as indicators of changes in marine resources (1993) Mar. Ecol. Prog. Ser., 95, pp. 1-6; Lilliendahl, K., The effect of predator presence on body mass in captive Greenfinches (1997) Anim. Behav., 53, pp. 75-81; Carison, A., Welander, J., Ekman, J.B., Behavioural control of daily fattening in Great Tits (Parus major) (1996) Can. J. Zool., 74, pp. 1612-1616; Lima, S.L., Predation risk and unpredictable feeding conditions: Determinants of body mass in birds (1986) Ecology, 67, pp. 377-385; McNamara, J.M., Houston, A.I., Starvation and predation as factor limiting population size (1987) Ecology, 68, pp. 1515-1519; The value of fat reserves and the tradeoff between starvation and predation (1990) Acta Biotheor., 38, pp. 37-61; Lima, S.L., Foraging routine of small birds in winter: A theoretical investigation (1994) J. Avian Biol., 25, pp. 287-302; Merkle, M.S., Barclay, R.M.R., Body mass variation in breeding Mountain Bluebirds Sialia currucoides: Evidence of stress or adaptation for flight? (1996) J. Anim. Ecol., 65, pp. 401-413; Rogers, C.M., Predation risk and fasting capacity: Do wintering birds maintain optimal body mass? (1987) Ecology, 68, pp. 1051-1061; Smith, J.N.M., Life-history theory in the non-breeding period: Trade-off in avian fat reserves? (1993) Ecology, 74, pp. 419-426; Smith, R.D., Metcalfe, N.B., Diurnal, seasonal and altitudinal variation in energy reserves of wintering Snow Buntings (1997) J. Avian. Biol., 28, pp. 216-222; Vincent, J., Bedard, J., Fat reserves in Snow Buntings (1976) Can. J. Zool., 54, pp. 1051-1063; Witter, M.S., Swaddle, J.P., Dominance, competition, and energetic reserves in the European Starling, Sturnus vulgaris (1995) Behav. Ecol., 6, pp. 343-348; Mass regulation in juvenile Starlings: Response to change in food availability depends on initial body mass (1997) Funct. Ecol., 11, pp. 11-15; Cuthill, I.C., Periodic food availability and strategic regulation of body mass in the European Starling, Sturnus vulgaris (1995) Funct. Ecol., 9, pp. 568-574. },
    ABSTRACT = { Studies on small wintering birds often monitor body mass variation over days or seasons. Typically, birds are weighed manually or data are obtained using an electronic balance which displays the bird's mass during visits to a feeder. The problem with these techniques is that they require the manipulation of the animals and/or are labor intensive. We built an automated system which combines a transponder-based radio identification device (RID) and an electronic balance fitted with a weighing perch. This setup permits daily mass variation in birds to be monitored automatically without human presence. The system provides reliable estimates of inert masses (r2 = 1). W'e also used it to monitor bird masses in an aviary. For five days birds were caught periodically and weighed manually to measure their "real" masses for comparison with the system's estimates. Again a strong relationship was found between calculated and real masses (r2 = 0.92 and r2 = 0.89 using two different balances). This system offers great promise and could be adapted to many forms of field work. },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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