Flight kinematics of the barn swallow (Hirundo rustica) over a wide range of speeds in a wind tunnel

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Flight kinematics of the barn swallow (Hirundo rustica) over a wide range of speeds in a wind tunnel.

Two barn swallows (Hirundo rustica) flying in the Lund wind tunnel were filmed using synchronised high-speed cameras to obtain posterior, ventral and lateral views of the birds in horizontal flapping flight. We investigated wingbeat kinematics, body tilt angle, tail spread and angle of attack at speeds of 4-14 ms(-1). Wingbeat frequency showed a clear U-shaped relationship with air speed with m...

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Differences in begging behaviour between barn swallow, Hirundo rustica, nestlings.

Recent models of parent-offspring communication suggest that nestling begging reliably reflects food requirements, and therefore should increase with nestling need. Need may be affected by short-term variations in hunger, as well as by long-term factors such as relative size, growth rate and body condition. In the present study, the brood sizes of barn swallows were manipulated to create differ...

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Flexibility in flight behaviour of barn swallows (Hirundo rustica) and house martins (Delichon urbica) tested in a wind tunnel.

The flight behaviour of barn swallows (Hirundo rustica) and house martins (Delichon urbica) was tested in a wind tunnel at 15 combinations of flight angles and speeds. In contrast to that of most other small passerines, the intermittent flight of hirundines rarely consists of regular patterns of flapping and rest phases. To vary mechanical power output, both species used intermittent flight, co...

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Clock gene polymorphism and scheduling of migration: a geolocator study of the barn swallow Hirundo rustica

Circannual rhythms often rely on endogenous seasonal photoperiodic timers involving 'clock' genes, and Clock gene polymorphism has been associated to variation in phenology in some bird species. In the long-distance migratory barn swallow Hirundo rustica, individuals bearing the rare Clock allele with the largest number of C-terminal polyglutamine repeats found in this species (Q8) show a delay...

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A Trade-Off between Reproduction and Feather Growth in the Barn Swallow (Hirundo rustica)

Physiological trade-offs mediated by limiting energy, resources or time constrain the simultaneous expression of major functions and can lead to the evolution of temporal separation between demanding activities. In birds, plumage renewal is a demanding activity, which accomplishes fundamental functions, such as allowing thermal insulation, aerodynamics and socio-sexual signaling. Feather renewa...

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ژورنال

عنوان ژورنال: Journal of Experimental Biology

سال: 2001

ISSN: 1477-9145,0022-0949

DOI: 10.1242/jeb.204.15.2741