The primary moult of Curlew Sandpiper in the Ebro Delta, North‐East Spain

Figuerola, Jordi; Bertolero, Albert

doi:10.1080/03078698.1995.9674108

Cited by 4 publications

(4 citation statements)

References 12 publications

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“…However, the number of birds that started wing moult in the study area was small (6.2% of the adult birds ringed in autumns 1992 and 1993), and although more males started to moult in the study area in 1993, no difference in the number of males and females moulting in the area was detected in 1992. 17 Longer stopovers of males were reported in both years, so we also reject the possibility that differences in moult patterns were the cause of the reported sex differences in stopover length (at least of those found in 1992).…”

Section: Sex Differences In Stopover Ecologymentioning

confidence: 46%

“…14 Data from moulting birds were not included in the analysis because moulting increases the energetic requirements of birds 15,16 and the rate of reserve accumulation at the study area was lower in moulting than in non-moulting Curlew Sandpipers. 17 Because the rate of reserve accumulation was one of the variables that affect stopover decisions, 2 the inclusion of these birds would have affected the results of our analysis.…”

Section: Methodsmentioning

confidence: 98%

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Sex differences in the stopover ecology of Curlew SandpipersCalidris ferrugineaat a refuelling area during autumn migration

Figuerola¹,

Bertolero²

1998

Bird Study

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Section: Sex Differences In Stopover Ecologymentioning

confidence: 46%

Section: Methodsmentioning

confidence: 98%

Sex differences in the stopover ecology of Curlew SandpipersCalidris ferrugineaat a refuelling area during autumn migration

Figuerola¹,

Bertolero²

1998

Bird Study

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“…Regarding sex differences, our results suggest that if the sexes differ in moult timing, it would rather be the males that start moult before females, which is contrary to what is mentioned in Cramp & Simmons (1983). Sex differences in the timing of post-breeding moult in waders was previously explained by sex differences in parental care, where the sex tending the offspring longest usually begins moult later (Figuerola & Bertolero 1995, Barshep et al 2013, Dietz et al 2013. However, in godwits both sexes take care of the chicks (Cramp & Simmons 1983).…”

Section: Discussionmentioning

confidence: 99%

Primary moult of continental Black-tailed GodwitsLimosa limosa limosain the Doñana wetlands, Spain

et al. 2018

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Capsule: Most Continental Black-tailed Godwits Limosa limosa limosa using the Doñana wetlands during post-breeding migration appear to begin moult before they arrive and suspend moult before they migrate onwards to West Africa. Aims: We aim to describe the primary moult strategies and patterns in the Continental Black-tailed Godwits using the Doñana wetlands, a major passage and wintering area for waterbirds in southern Spain. Methods: Individual godwits were captured, marked and their primary moult was scored in Doñana during the non-breeding season (June-March) in 2011 and 2012. Data from resightings of colourmarked godwits and birds equipped with satellite transmitters were used to estimate stopover duration during post-breeding migration (June-September) to determine if godwits move to West Africa before completing their primary moult. Results: Average primary moult duration was estimated to be 84 days ± 9 se, during 29 June-21 September and did not differ between sexes. Only 2% of individuals were observed with suspended moult. We estimated stopover duration in Doñana to be 13 days ± 2 se before migrating to West Africa. Conclusions: Most godwits stage for about two weeks in the Doñana wetlands during southward migration, moult their primaries and appear to suspend moult before crossing the Sahara. Others may complete their primary moult in Doñana, or elsewhere in Europe and overwinter in Doñana where increasing numbers of godwits have been detected in recent years. A few individuals may finish the moult in Doñana and migrate to West Africa late in the post-breeding season.

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“…This species exhibits reversed sexual size dimorphism, with bill length being the most useful linear body measurement for sexing this species, as females have distinctly longer bill than males (Glutz von Blotzheim et al 1975, Cramp & Simmons 1983. The current method for sexing Curlew Sandpipers using a discrimination function was developed by Wymenga et al (1990) from measurements of museum specimens, and has been widely applied (Figuerola & Bertolero 1995, Melter & Kepp 2006, Barshep et al 2011, Barshep et al 2012. Wymenga et al (1990) do not, however, offer error rates associated with their methodology, nor is there information on the sample size of birds used in their analysis.…”

Section: Introductionmentioning

confidence: 99%

Sexual dimorphism in size and plumage in adult Curlew Sandpipers (Calidris ferruginea) migrating in autumn through the Baltic Sea region

Witkowska,

Meissner

2020

Ornis Fenn

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The Curlew Sandpiper (Calidris ferruginea) displays sexual dimorphism in size and in breeding plumage. We analysed biometric and plumage characteristics in adult Curlew Sandpipers and proposed a protocol for sexing individuals, with the use of the discriminant function analysis. We measured 222 females and 164 males captured during autumn migration on the southern Baltic coast, among which 92 females and 84 males were photographed for analysis of plumage characteristics. All birds were sexed with molecular methods. Females were larger than males in all body measurements. Bill length was the most dimorphic trait, and the most effective function with bill length as a single predictor correctly identified the sex of 82.1% of birds.

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The primary moult of Curlew Sandpiper in the Ebro Delta, North‐East Spain

Cited by 4 publications

References 12 publications

Sex differences in the stopover ecology of Curlew SandpipersCalidris ferrugineaat a refuelling area during autumn migration

Sex differences in the stopover ecology of Curlew SandpipersCalidris ferrugineaat a refuelling area during autumn migration

Primary moult of continental Black-tailed GodwitsLimosa limosa limosain the Doñana wetlands, Spain

Sexual dimorphism in size and plumage in adult Curlew Sandpipers (Calidris ferruginea) migrating in autumn through the Baltic Sea region

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