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Keywords: avian
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Journal Articles
J Exp Biol (2022) 225 (2): jeb243208.
Published: 27 January 2022
... that can enter deep torpor, facultative shallow torpor might help balance energy savings with these potential costs. Deep torpor occurs in three avian orders, but the trade-offs of deep torpor in birds are unknown. Although the literature hints that some bird species (mousebirds and perhaps hummingbirds...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (4): jeb232777.
Published: 24 February 2021
... traits vary with fine-scale microclimate, but this has received less attention in endotherms. Here, we test the hypothesis that avian thermoregulation varies with microclimate and behavioural constraints in a non-passerine bird. Male and female southern yellow-billed hornbills ( Tockus leucomelas...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (20): jeb202978.
Published: 16 October 2019
... patterns in specific volatile compounds previously shown to predict junco reproductive success. Together, our data provide experimental support for the hypothesis that symbiotic bacteria produce behaviourally relevant volatile compounds within avian chemical cues and signals. We collected two preen...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (12): jeb199232.
Published: 17 June 2019
... previously been suggested that ITD is significantly modulated by internally coupled middle ears, both in chickens ( Hyson et al., 1994 ) and in other avian species ( Calford and Piddington, 1988 ; Larsen et al., 2006 ; Rosowski, 1979 ). Other investigators, however, remained unconvinced of any significant...
Journal Articles
J Exp Biol (2018) 221 (11): jeb174441.
Published: 12 June 2018
... Dopamine Estradiol Avian To optimize breeding success, animals must coordinate breeding behavior with the availability of environmental resources such as breeding territories, rainfall, food and mate availability. Advances have been made in understanding the roles of photoperiod, the hypothalamic...
Journal Articles
J Exp Biol (2017) 220 (16): 2947–2956.
Published: 15 August 2017
... in reproductive development consistent with adaptive specialization in the use of photoperiodic cues, but not social cues, to regulate reproductive development. Migration Reproduction Song Phenology Avian Seasonal timing For seasonally breeding vertebrates, the decision of when to breed can...
Includes: Supplementary data
Journal Articles
In collection:
Neuroethology
J Exp Biol (2017) 220 (15): 2701–2705.
Published: 1 August 2017
... papilla and compared them with those in the mammalian auditory sensory epithelium. As in mammals, the avian auditory hair cell uses KCNQ4, KCNMA1 and KCNMB1 in its K + efflux system. Expression of KCNQ1 and KCNE1 suggests an additional efflux apparatus in avian hair cells. Marked differences were observed...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (8): 1214–1223.
Published: 15 April 2016
... be limited by the OXPHOS capacity of skeletal muscles. Very few studies have examined developmental trajectories of in situ mitochondrial function in permeabilized fibers in avian or mammalian skeletal muscle. Permeabilized pectoralis muscle fiber OXPHOS CI+CII capacity in semi-altricial Adélie...
Journal Articles
J Exp Biol (2015) 218 (23): 3836–3844.
Published: 1 December 2015
...Robert E. Kambic; Thomas J. Roberts; Stephen M. Gatesy ABSTRACT In avian bipeds performing steady locomotion, right and left limbs are typically assumed to act out of phase, but with little kinematic disparity. However, outwardly appearing steadiness may harbor previously unrecognized asymmetries...
Includes: Supplementary data
Journal Articles
J Exp Biol (2014) 217 (15): 2770–2782.
Published: 1 August 2014
... anonymous reviewers. We sought to establish a set of coordinate systems for the guineafowl hind limb (Figs A1 , A2 ) that would allow us to compare 3D motion derived from XROMM analysis among individuals and among different avian species. XROMM data presented in a common format will improve...
Includes: Supplementary data
Journal Articles
J Exp Biol (2013) 216 (12): 2165–2171.
Published: 15 June 2013
... gradients to allow environmental odour-based navigation. The investigation of the potential role of olfactory cues for navigation in wild birds is still at an early stage; however, the evidence collected so far suggests that olfactory navigation might be a widespread mechanism in avian species...
Journal Articles
J Exp Biol (2012) 215 (7): 1090–1105.
Published: 1 April 2012
... between relative proportions of cone classes and either visual habitat or display colour. Overall, we detected little interspecific variation in bowerbird spectral sensitivity and no association between sensitivity and display diversity, which is consistent with the general trend among avian taxa. We...
Includes: Supplementary data
Journal Articles
J Exp Biol (2011) 214 (17): 2823–2831.
Published: 1 September 2011
... in this Zugunruhe context. While our data provide no evidence for functionality of these splice variants, the apparently broad distribution of these variants in birds and the lack of similar variants in non-avian species warrant further attention and investigation into their possible function. These results...
Journal Articles
J Exp Biol (2011) 214 (15): 2455–2462.
Published: 1 August 2011
... change. scottg2@mcmaster.ca 9 5 2011 © 2011. 2011 avian bar-headed goose oxygen cascade respiratory physiology pulmonary diffusion capillary mitochondria High-altitude environments pose numerous challenges to animal life. The physical environment changes...
Journal Articles
J Exp Biol (2010) 213 (13): 2201–2208.
Published: 1 July 2010
... ) 22 3 2010 © 2010. 2010 avian biomechanics limb locomotion muscle The mechanical functions of muscle during legged locomotion are diverse and complex. Muscles may load elastic tissues to store mechanical energy, exert force to support body weight, do work to accelerate...
Journal Articles
J Exp Biol (2008) 211 (9): 1394–1401.
Published: 1 May 2008
... and intracellular release implies a more versatile functional capacity of the avian epidermis than had previously been thought. The horny layer would not be a `dead moiety' since the Ca 2+ entrapped within the corneocyte could be secreted via desquamation, or it may be secreted and recycled at the transitional...
Journal Articles
J Exp Biol (2007) 210 (11): 1912–1924.
Published: 1 June 2007
... reorientation and aerodynamic torque estimates correlated, significantly, with asymmetries in the activation profile of four flight muscles: the pectoralis, supracoracoideus, biceps brachii and extensor metacarpi radialis ( r 2 from 0.27 to 0.45, P <0.005). Thus, avian flight maneuvers rely on production...
Journal Articles
J Exp Biol (2007) 210 (11): 1897–1911.
Published: 1 June 2007
...@bio.unc.edu ) 6 3 2007 © The Company of Biologists Limited 2007 2007 avian maneuvering biomechanics flight dynamics Eolophus roseicapillus Although the vast majority of the experimental work on the biomechanics of avian flight has focused on steady state flight, this focus...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2004) 207 (23): 4165–4174.
Published: 1 November 2004
..., RI 02912, USA(e-mail: thomas_roberts@brown.edu ) † University of Tennessee, Department of Ecology and Evolutionary Biology,569 Dabney Hall, Knoxville, TN 37996-1610, USA 17 8 2004 © The Company of Biologists Limited 2004 2004 locomotion muscle work muscle power avian...
Journal Articles
J Exp Biol (2004) 207 (13): 2277–2288.
Published: 1 June 2004
.... Zar, J. H. ( 1996 ). Biostatistical Analysis . Upper Saddle River, NJ: Prentice Hall. * Author for correspondence (e-mail: gabaldoa@science.oregonstate.edu ) 1 4 2004 © The Company of Biologists Limited 2004 2004 locomotion bird avian lateral gastrocnemius peroneus...