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Development of locomotion over inclined surfaces in laying hens

  • C. LeBlanc (a1), B. Tobalske (a2), S. Bowley (a3) and A. Harlander-Matauschek (a1)


The purpose of the present study was to evaluate locomotor strategies during development in domestic chickens (Gallus gallus domesticus); we were motivated, in part, by current efforts to improve the design of housing systems for laying hens which aim to reduce injury and over-exertion. Using four strains of laying hens (Lohmann Brown, Lohmann LSL lite, Dekalb White and Hyline Brown) throughout this longitudinal study, we investigated their locomotor style and climbing capacity in relation to the degree (0 to 70°) of incline, age (2 to 36 weeks) and the surface substrate (sandpaper or wire grid). Chicks and adult fowl performed only walking behavior to climb inclines ⩽40° and performed a combination of wing-assisted incline running (WAIR) or aerial ascent on steeper inclines. Fewer birds used their wings to aid their hind limbs when climbing 50° inclines on wire grid surface compared with sandpaper. The steepness of angle achieved during WAIR and the tendency to fly instead of using WAIR increased with increasing age and experience. White-feathered strains performed more wing-associated locomotor behavior compared with brown-feathered strains. A subset of birds was never able to climb incline angles >40° even when using WAIR. Therefore, we suggest that inclines of up to 40° should be provided for hens in three-dimensional housing systems, which are easily negotiated (without wing use) by chicks and adult fowl.


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Adolph, KE 1995. Psychophysical assessment of toddlers’ ability to cope with slopes. Journal of Experimental Psychology: Human Perception & Performance 21, 734750.
Birn-Jeffery, AV and Higham, TE 2014. The scaling of uphill and downhill locomotion in legged animals. Integrative and Comparative Biology 54, 11591172.
Blokhuis, H, Fiks Van Niekerk, T, Bessei, W, Elson, A, Guémené, D, Kjaer, J, Maria Levrino, GA, Nicol, CJ, Tauson, R, Weeks, CA and Van De Weerd, HA 2007. The LayWel project: Welfare implications of changes in production systems for laying hens. World’s Poultry Science Journal 63, 101114.
Bock, WJ and Miller, WD 1959. The scansorial foot of the woodpeckers with comments on the evolution of perching and climbing feet in birds. American Museum Novitates 1931, 145.
Collias, NE and Collias, EC 1967. A field study of the red jungle fowl in north-central India. The Condor 69, 360386.
Collias, NE, Collias, EC, Hunsaker, D and Minning, L 1966. Locality fixation, mobility and social organization within an unconfined population of red jungle fowl. Animal Behavior 14, 550559.
Dial, KP 1992. Avian forelimb muscles and nonsteady flight: can birds fly without using the muscles in their wings? The Auk 109, 874885.
Dial, KP 2003. Evolution of avian locomotion: correlates of flight style, locomotor modules, nesting biology, body size, development, and the origin of flapping flight. The Auk 120, 941952.
Dial, KP and Jackson, BE 2011. When hatchlings outperform adults: locomotor development in Australian brush turkeys (Alectura lathami, Galliformes). Proceedings of the Royal Society B: Biological Sciences 278, 16101616.
Hakansson, J and Jensen, P 2005. Behavioural and morphological variation between captive populations of red junglefowl (Gallus gallus) – possible implications for conservation. Biological Conservation 122, 431439.
Harlander-Matauschek, A, Rodenburg, TB, Sandilands, V, Tobalske, BW and Toscano, MJ 2015. Causes of keel bone damage and their solutions in laying hens. World’s Poultry Science Journal 71, 461472.
Hedrick, TL 2008. Software techniques for two- and three-dimensional kinematic measurements of biological and biomimetic systems. Bioinspiration and Biomimetics 3, 034001.
Heers, AM and Dial, KP 2015. Wings versus legs in the avian bauplan: development and evolution of alternative locomotor strategies. Evolution 69, 305320.
Jackson, BE, Segre, P and Dial, KP 2009. Precocial development of locomotor performance in a ground-dwelling bird (Alectoris chukar): negotiating a three-dimensional terrestrial environment. Proceedings of the Royal Society of London B: Biological Sciences 276, 34573466.
Jackson, BE, Tobalske, BW and Dial, KP 2011. The broad range of contractile behaviour of the avian pectoralis: functional and evolutionary implications. Journal of Experimental Biology 214, 23542361.
Jones, DN and Goth, A 2008. Mound-builders. CSIRO Publishing, Collingwood, Australia.
Kozak, M, Tobalske, B, Martins, C, Bowley, S, Wuerbel, H and Harlander-Matauschek, A 2016. Use of space by domestic chicks in complex aviaries. Applied Animal Behavior Science 181, 115121.
Kullberg, C, Houston, DC and Metcalfe, NB 2002. Impaired flight ability – a cost of reproduction in female blue tits. Behavioral Ecology 13, 575579.
LeBlanc, S, Springthorpe, D, Quinton, M, Szkotnicki, B, Tobalske, B, Wuerbel, H and Harlander-Matauschek, A 2016. Physical health problems and environmental challenges influence balancing behavior in laying hens. PLoS One 11, e0153477.
Moinard, C, Statham, P, Haskell, M J, McCorquodale, C, Jones, RB and Green, PR 2004. Accuracy of laying hens in jumping upwards and downwards between perches in different light environments. Applied Animal Behavior Science 85, 7792.
Muir, GD 2000. Early ontogeny of locomotor behaviour: a comparison between altricial and precocial animals. Brain Research Bulletin 53, 719726.
Necker, R 2006. Specializations in the lumbosacral vertebral canal and spinal cord of birds: evidence of a function as a sense organ which is involved in the control of walking. Journal of Comparative Physiology A 192, 439448.
Pike, AVL and Maitland, DP 2004. Scaling of bird claws. Journal of Zoology 262, 7381.
Proctor, NS and Lynch, PJ 1993. Manual of ornithology: avian structure & function. Yale University, New Haven, CT, USA.
Provini, P, Tobalske, BW, Crandell, KE and Abourachid, A 2014. Transition from wing to leg forces during landing in birds. Journal of Experimental Biology 217, 26592666.
Rasband, WS 1997–2016. ImageJ. National Institutes of Health, Bethesda, Maryland, USA.
Roberts, TJ, Higginson, BK, Nelson, FE and Gabaldón, AM 2007. Muscle strain is modulated more with running slope than speed in wild turkey knee and hip extensors. Journal of Experimental Biology 210, 25102517.
Roberts, TJ, Marsh, RL, Weyand, PGC and Taylor, R 1997. Muscular force in running turkeys: the economy of minimizing work. Science 275, 11131115.
Rose, KA, Codd, JR and Nudds, RL 2016. Differential sex-specific walking kinematics in leghorn chickens (Gallus gallus domesticus) selectively bred for different body size. Journal of Experimental Biology 219, 25252533.
Sandilands, V, Moinard, C and Sparks, NH 2009. Providing laying hens with perches: fulfilling behavioural needs but causing injury? British Poultry Science 50, 395406.
Schmitt, D 2010. Primate locomotor evolution: biomechanical studies of primate locomotion and their implications for understanding primate neuroethology. In Primate neuroethology (ed.. ML Platt and AA Ghanzafar), pp. 3161. Oxford University Press, Oxford, UK.
Scott, GB, Lambe, NR and Hitchcock, D 1997. Ability of laying hens to negotiate horizontal perches at different heights, separated by different angels. British Poultry Science 38, 4854.
Stratmann, A, Fröhlich, EKF, Gebhardt-Henrich, SB, Harlander-Matauschek, A, Würbel, H and Toscano, MJ 2015. Modification of aviary design reduces incidence of falls, collisions and keel bone damage in laying hens. Applied Animal Behaviour Science 165, 112123.
Tobalske, BW and Dial, KP 2007. Aerodynamics of wing-assisted incline running in birds. Journal of Experimental Biology 210, 17421751.
Tobalske, BW and Dial, KP 2000. Effects of body size on take-off flight performance in the Phasianidae (aves). Journal of Experimental Biology 203, 33193332.
Tobalske, BW, Jackson, BE and Dial, KP 2017. Ontogeny of flight capacity and pectoralis development in a precocial ground bird (Alectoris chukar). Integrative and Comparative Biology.
Wilkins, LJ, McKinstry, JL, Avery, NC, Knowles, TG, Brown, SN, Tarlton, J and Nicol, CJ 2011. Influence of housing system and design on bone strength and keel bone fractures in laying hens. Veterinary Record 169, 414.
Wood-Gush, DGM 1971. The behaviour of the domestic fowl. Heinemann Educational Books LTD., London, UK.


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Development of locomotion over inclined surfaces in laying hens

  • C. LeBlanc (a1), B. Tobalske (a2), S. Bowley (a3) and A. Harlander-Matauschek (a1)


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