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Porträttbild av Peter Olsson. Foto.

Peter Olsson

Forskare

Porträttbild av Peter Olsson. Foto.

In Tundra Plovers the Frequency of Inner Flight Feather Replacement Varies with Length of Long-Distance Flights

Författare

  • Jopp Jukerna
  • Johan Van Rhijn
  • Peter Olsson
  • Theunis Piersma

Summary, in English

The repair jobs that birds have to do to maintain high quality plumage take energy and time, so should be under intense selection. Recently, we have shown that secondary moult in the Eurasian Golden Plover Pluvialis apricaria is incomplete, irregular and asymmetric between wings, and argued that this reflected their ‘relaxed’ migratory habits. On the basis of this hypothesis, we predict that relatives of this species that have to make long flights between breeding areas and winter quarters would invest more in the moult of secondaries. To test this we collected data on moult patterns in two populations of Pacific Golden Plovers Pluvialis fulva (Siberia and Alaska), on American Golden Plovers Pluvialis dominica (Alaska) and Grey Plovers Pluvialis squatarola. Data were from the breeding, staging (Mongolia and Indiana) and wintering (Uruguay) areas. We found patterns consistent with our prediction: Pacific Golden Plovers from Siberia, and Grey Plovers have a similar moulting pattern to Eurasian Golden Plovers. Although both go to remote winter quarters, they migrate mainly over land, probably making short or moderate flights, as they are able to stage frequently. In contrast, the Alaskan populations of Pacific Golden Plovers and American Golden Plovers tend to renew all their secondaries from their second wing moult onwards. In line with their moult patterns, these two populations are known to make very long non-stop flights between breeding and winter areas. We argue that irregular moult and the partial renewal of secondaries is a primitive character in all four species. The full replacement of secondaries in the Pacific Golden Plovers and American Golden Plovers from Alaska may be considered as an adaptation for very long demanding flights. Regular moult patterns of secondaries, as found in many other shorebirds, could be a further refinement of this adaptation.

Publiceringsår

2013-09

Språk

Engelska

Sidor

121-132

Publikation/Tidskrift/Serie

Ardea

Volym

101

Issue

2

Dokumenttyp

Artikel i tidskrift

Förlag

Nederlandse Ornithologische Unie

Ämne

  • Zoology
  • Ecology

Nyckelord

  • Golden Plover
  • Pluvialis spp.
  • Grey Plover
  • secondary moult
  • irregular moult
  • arrested moult
  • migration
  • non-stop flight
  • evolution
  • primitive character

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0373-2266