How birds direct impulse to minimize the energetic cost of foraging flight

Chin, Diana D.; Lentink, David

doi:10.1126/sciadv.1603041

Cited by 35 publications

(51 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In aerial insectivores, which feed on the wing, foraging is closely linked to flapping or soaring flight, flight makes up a much greater proportion of parental activity (∼50-60%), and these species likely operate for longer at maximum sustained metabolic rates. Many arboreal species forage by frequently hopping or flying very short distances between branches, so although flapping flight is a small proportion of time/activity, this form of foraging might (Nudds and Bryant, 2000;Tinbergen and Dietz, 1994) or might not (Chin and Lentink, 2017;Yap et al, 2017) generate high physiological costs. In contrast, for ground-feeding birds (such as starlings, thrushes, shorebirds, etc.…”

Section: Cost Of Reproductionmentioning

confidence: 99%

Physiology, activity and costs of parental care in birds

Williams

2018

Journal of Experimental Biology

View full text Add to dashboard Cite

Parental care is assumed to be costly in that it requires sustained, high-intensity activity sufficient to cause costs of reproduction (decreased survival and future fecundity of parents). Costs of reproduction are, in turn, thought to have a physiological basis where intense activity causes a decrease in parental condition. However, attempts to identify the physiological basis of costs of reproduction have produced mixed results. Here, I argue that in birds, the central idea that parental care represents sustained, high-intensity work might be incorrect. Specifically: (a) the duration of intense activity associated with chick-rearing might be quite limited; (b) flight, the most obvious sustained, high-intensity activity, might only represent a small component of an individual's overall activity budget; (c) some (high-quality) individuals might be able to tolerate costs of intense activity, either owing to their physiological state or because they have access to more resources, without perturbation of physiological homeostasis; and (d) individuals might utilise other mechanisms to modulate costs of activity, for example, mass loss, again avoiding more substantial physiological costs. Furthermore, I highlight the important fact that life-history theory predicts that reproductive trade-offs should only be expected under food stress. Most birds breed in spring and early summer precisely because of seasonal increases in food abundance, and so it is unclear how often parents are food stressed. Consequently, I argue that there are many reasons why costs of reproduction, and any physiological signature of these costs, might be quite rare, both temporally (in different years) and among individuals.

show abstract

Section: Cost Of Reproductionmentioning

confidence: 99%

Physiology, activity and costs of parental care in birds

Williams

2018

Journal of Experimental Biology

View full text Add to dashboard Cite

show abstract

“…Taxonomically, gliding is used by a large range of groups, including mammals, reptiles, arthropods, and amphibians (Socha et al, ), whereas flapping flight is restricted to bats, birds, and insects (Alexander, ). Generally, there have been few studies of gap‐crossing in flapping flyers at scales on the order of a few body lengths (but see Chin & Lentink, ), and studies of gliding across smaller gaps have focused on squirrels (Ando & Shiraishi, ; Paskins, Bowyer, Megill, & Scheibe, ; Stafford, Thorington, & Kawamichi, ).…”

Section: Categories Of Gap‐crossing Behaviorsmentioning

confidence: 99%

“…Animals capable of powered flight are less constrained by distance, as they can begin to generate aerodynamic forces nearly instantaneously (<0.2 s for Pacific parrotlets; Chin & Lentink, ). Nevertheless, flying animals often fly less and hop more in dense substrate or across short distances (Robinson & Holmes, , 1984), thus the small distance limit appears to apply to these behaviors as well.…”

Section: Biomechanical Factors Influencing Gap‐crossing Behaviormentioning

confidence: 99%

Going the distance: The biomechanics of gap‐crossing behaviors

Graham

Socha

2019

J Exp Zool Pt A

View full text Add to dashboard Cite

The discontinuity of the canopy habitat is one of the principle differences between the terrestrial and arboreal environments. An animal's ability to cross gaps-to move from one support to another across an empty space-is influenced by both the physical structure of the gap and the animal's locomotor capabilities. In this review, we discuss the range of behaviors animals use to cross gaps. Focusing on the biomechanics of these behaviors, we suggest broad categorizations that facilitate comparisons between taxa. We also discuss the importance of gap distance in determining crossing behavior, and suggest several mechanical characteristics that may influence behavior choice, including the degree to which a behavior is dynamic, and whether or not the behavior is airborne. Overall, gap crossing is an important aspect of arboreal locomotion that deserves further in-depth attention, particularly given the ubiquity of gaps in the arboreal habitat. K E Y W O R D S arboreal locomotion, biomechanics, gap crossing 2009; Jusufi, Goldman, Revzen, & Full, 2008;Schmidt & Fischer, 2010), how these strategies might relate to gap crossing, or vary with varying gap distance, has rarely been examined.Nevertheless, the limited data from a range of taxa suggest potential trends that link gap distance with behavior. In this review, J. Exp. Zool. 2020;333:60-73. wileyonlinelibrary.com/journal/jez 60 |

show abstract

“…3). We have previously shown experimental results for fluid forces measured by 1D aerodynamic force platforms that measure vertical forces (Lentink et al 2015;Chin and Lentink 2017;. The 2D AFP includes instrumented top, bottom, front, and rear plates for measuring both net vertical and horizontal forces (additional details on this setup will be published elsewhere).…”

Section: Aerodynamic Force Platform Formulationsmentioning

confidence: 99%

Fluid moment and force measurement based on control surface integration

Chin

Lentink

2019

Exp Fluids

Self Cite

View full text Add to dashboard Cite

The moments and torques acting on a deforming body determine its stability and maneuverability. For animals, robots, vehicles, and other deforming objects locomoting in liquid or gaseous fluids, these fluid moments are challenging to accurately measure during unconstrained motion. Particle image velocimetry and aerodynamic force platforms have the potential to resolve this challenge through the use of control surface integration. These measurement techniques have previously been used to recover fluid forces. Here, we show how control surface integration can similarly be used to recover the 3D fluid moments generated about a deforming body's center of mass. We first derive a general formulation that can be applied to any body locomoting in a fluid. We then show when and how this formulation can be greatly simplified without loss of accuracy for conditions commonly encountered during fluid experiments, such as for tests done in wind or water channels. Finally, we provide detailed formulations to show how measurements from an aerodynamic force platform can be used to determine the net instantaneous moments generated by a freely flying body. These formulations also apply more generally to other fluid applications, such as underwater swimming or locomotion over water surfaces.

show abstract

How birds direct impulse to minimize the energetic cost of foraging flight

Abstract: Parrotlets direct leg takeoff force to minimize energy costs of foraging flights across different distances and inclinations.

Cited by 35 publications

References 64 publications

Physiology, activity and costs of parental care in birds

Physiology, activity and costs of parental care in birds

Going the distance: The biomechanics of gap‐crossing behaviors

Fluid moment and force measurement based on control surface integration

Contact Info

Product

Resources

About