Suspended Moult of Trans-Saharan Migrants in Iberia

Mead, C. J.; Watmough, B. R.

doi:10.1080/00063657609476500

Cited by 62 publications

(71 citation statements)

References 13 publications

(16 reference statements)

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“…In our experimental group in 1980 all 15 adult birds showed moult suspension whereas Mead & Watmouth (1976) only in 3 of 6 adults examined suspension observed. These 3 birds retained 3.7 secondaries on the average whereas one third of the birds of our study also retained primaries.…”

Section: Conclusion and Discussionmentioning

confidence: 98%

“…A virtually complete moult was found in those kept in short days and a suspended moult in those kept in long days. Mead & Watmouth (1976) concluded from the occurrence of moult suspension in one of these captive groups that it is endogenously controlled. In fact, however, this short-term experiment rather confirms our findings that also in the Turtle Dove moult can be adapted to various experimental conditions on a facultative basis.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

“…Possibly, in species that regularly show suspension of primary moult it could be that this suspension quite regularly occurs in all individuals which have (successfully) bred in the preceeding breeding season regardless of whether this individual breeding season was early or late. Thus species as Otus scops, Streptopelia turtur or Merops apiaster with regular suspension of primaries moult (category 1 in Mead & Watmouth 1976) should be experimentally studied in (more) detail. …”

Section: Conclusion and Discussionmentioning

confidence: 99%

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On the Control of Suspended Moult in an European Trans-Saharan Migrant, the Orphean Warbler

Berthold

Querner

1982

Journal of the Yamashina Institute for Ornithology

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Suspended moult is a special adaptive moult strategy which is widespread in longdistance migrants. The replacement of remiges and rectrices in this type of moult starts before migration but then is interrupted during migration. So far, it has virtually not been investigated experimentally.We carried out an investigation on the Orphean Warbler, Sylvia hortensis, an European trans-Saharan migrant known commonly to suspend its moult. We studied 15 trapped adults and 8 handraised young individuals, which were kept in light conditions simulating those to which freeliving conspecifics are normally exposed in the course of a year. In the first experimental year, the adults, caught during breeding, all suspended their moult and retained some old primaries, secondaries, and tertials. In the second experimental year, when the same birds were prevented from breeding, they moulted weeks earlier, and, as a result, completed their moult before the migratory period. Similarly, the handraised birds showed a complete moult in their second year. Thus, the suspended moult of the Orphean Warbler is not based on strictly endogenously controlled moult programs with preprogrammed moult pauses. Moult in this species can be adapted on a facultative basis to various conditions experienced. The course of the moult and its suspension appear to be linked to the preceeding individual breeding season, and some conceivable control mechanisms are discussed in detail.

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Section: Conclusion and Discussionmentioning

confidence: 98%

Section: Conclusion and Discussionmentioning

confidence: 99%

Section: Conclusion and Discussionmentioning

confidence: 99%

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On the Control of Suspended Moult in an European Trans-Saharan Migrant, the Orphean Warbler

Berthold

Querner

1982

Journal of the Yamashina Institute for Ornithology

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“…The absence of any noticeable movements of adults in July (Table 1) is almost certainly due to birds being in active moult. By early August, when many birds would have finished moulting, longerdistance recoveries occurred, though some adults may migrate before moult is complete (see Mead & Watmough 1976 for details of Willow Warblers trapped in Iberia with suspended moult of some secondaries).…”

Section: Adultsmentioning

confidence: 99%

“…Post nuptial moult in adult Willow Warblers lasts about 40 days in North-East England (Norman 1982) and Southern Finland (Tiainen 1981), commencing from mid to late June in England (Ginn & Melville 1983) and late June in Finland (Tiainen 1981). On the assumption that other Scandinavian and west European populations have similar moult time-scales, Continental adult Willow Warblers should not appear in Britain before 4 August, (providing moult is not suspended (Mead & Watmough 1976)). …”

Section: Origins Of East Coast Birdsmentioning

confidence: 99%