The flight feather moult pattern of the bearded vulture (Gypaetus barbatus). [PDF]
Moult is an extremely time-consuming and energy-demanding task for large birds. In addition, there is a trade-off between the time devoted to moulting and that invested in other activities such as breeding and/or territory exploration. Moreover, it takes
A Adam +43 more
core +2 more sources
Validating the use of intrinsic markers in body feathers to identify inter-individual differences in non-breeding areas of northern fulmars [PDF]
Acknowledgments We thank Claire Deacon, Gareth Norton and Andrea Raab for help with laboratory work at the University of Aberdeen, and Barry Thornton and Gillian Martin for running stable isotope analysis at the James Hutton Institute.
Graham, Isla M. +4 more
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Using field photography to study avian moult [PDF]
Methods to obtain moult data from wild birds have not changed much over the last century and most studies still depend on checking museum specimens or capturing birds.
Furness, Robert W. +2 more
core +1 more source
Background Metamorphosis remains one of the most complicated and poorly understood processes in insects. This is particularly so for the very dynamic transformations that take place within the pupal sheath of holometabolous insects.
Chenjing Zhao +9 more
doaj +1 more source
Flight feather moult in Western Marsh Harriers during autumn migration
Background Most of long-distance migratory raptors suspend moult during migration but detailed information is patchy for most of the Palearctic species.
Juan Ramírez, Michele Panuccio
doaj +1 more source
Determinants and constraints of feather growth.
During the periodic moult of the plumage of birds, a fast regrowth of feathers would shorten the time of reduced plumage functionality. However, it has long been known that feather growth-rate is limited and that long feathers take disproportionally ...
Lukas Jenni +3 more
doaj +1 more source
Beak colour dynamically signals changes in fasting status and parasite loads in king penguins [PDF]
This research was funded by the French Polar Institute (IPEV–Research Program 119) and the French National Centre for Scientific Research (CNRS-INEE). Field logistic support was provided by Terres Australes et Antarctiques Françaises. Q.S.
Bize, Pierre +5 more
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The Implicit Relational Assessment Procedure (IRAP) as a measure of spider fear, avoidance and approach [PDF]
The current study examined the use of the Implicit Relational Assessment Procedure (IRAP) as a measure of spider fear, approach, and avoidance. Participants were drawn from a normative sample of university undergraduates.
Barnes-Holmes, Patrick Michael Dermot +2 more
core +2 more sources
Key facets of the foraging ecology of seabirds during the inter-breeding period still remain poorly understood because of the difficulty of studying them at sea, including during the energy-demanding moulting stage.
Yves eCherel +3 more
doaj +1 more source
Comparación de la extensión de la muda posjuvenil en el ruiseñor pechiazul ibérico (Luscinia svecica azuricollis) con dos subespecies próximas geográficamente [PDF]
El ruiseñor pechiazul ibérico Luscinia svecica azuricollis es una subespecie que cría en zonas de montaña del noroeste de la Península Ibérica y que cuenta con una reducida ventana temporal para mudar entre la cría y la migración.
Daniel Alonso +3 more
doaj +1 more source

