Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: ptilochronology

Sortuj według:

Ogranicz wyniki do:

Repeatable length and mass but not growth rate of individual feathers between moults in a passerine bird

100%

De La Hera I., Perez-Tris J., Telleria J. L.

Acta Ornithologica

2009

tom 44

nr 1

Plumage is regularly replaced over the lifetime of birds, and, consequently, variable conditions experienced during plumage development can affect feather growth rate or the expression of feather characteristics. We assessed intra-individual constancy in the length, mass, and growth rate of tail feathers between complete moults of 13 free-living individual Blackcaps Sylvia atricapilla. Between-moult repeatability was high for the length and mass, but not for growth rate of individual tail feathers. The feathers produced in the later moult grew at a slower rate, which shows that the time to produce similar feathers increases with age.

Ograniczanie wyników

1 Acta Ornithologica

1 De La Hera I.

1 Perez-Tris J.

1 Telleria J. L.

1 2009

Wyniki wyszukiwania

Repeatable length and mass but not growth rate of individual feathers between moults in a passerine bird