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  • Author: Radosław Włodarczyk x
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Radosław Włodarczyk, Krzysztof Kaczmarek and Rafał Bargiel

Fifteen years of the Common Snipe (Gallinago gallinago) study at the Jeziorsko reservoir with some notes about weight and moult

The Students's Section from University of Łódź organises ringing camp at the dam reservoir every year. The aim of the camp is wader and duck ringing. One of the most numerous species of bird ringed is the Common Snipe. During 15 years (1989-2003) of studies 4142 individuals of this species were ringed. Age ratio differed among years, but every year young birds represented more that 80% of all ringed individuals. Snipes caught in September caused problems with age identification and that impeded to obtain correct age ratio each year. Analysis of weight of caught birds revealed between-years variation in juvenile birds, adults were excluded from analysis due to small sample size. Throughout the autumn months the increase in mean body mass in young birds was observed. Data about moult suggest that adult birds show two main strategies of primary moult: traditional moult and suspended moult. Both of them are of the same frequency. Tail feathers are moulted by juveniles as well as by adults simultaneously.

Open access

Piotr Minias, Krzysztof Kaczmarek, Radosław Włodarczyk and Tomasz Janiszewski

Pattern of Post-Juvenile Moult in Common Snipe (Gallinago Gallinago) and Its Implications for Ageing of the Species

External ageing of Common Snipe (Gallinago gallinago) still engenders considerable problems. To improve precision of age determination on the basis of plumage characteristics a scheme of post-juvenile moult was investigated in approximately 1200 first-year Common Snipes caught during autumn migration in central Poland. Post-juvenile moult was commenced from body feathers followed by moult of rectrices, lesser/median wing coverts and tertials. Moult sequence showed high inter-individual variability and was started in rectrices (36.9%), wing coverts (25.3%), tertials (8.4%) or simultaneously in several of these tracts of feathers (29.4%). Moult of rectrices was finished before completion of moult of wing coverts and tertials. Moult of tertials finished as the last from all age-indicative tracts of feathers. Consequently, tertials were suggested as the most useful for ageing of first-year Common Snipes in an advanced stage of moult. There was no case of moult of the outermost tertial in first-year birds. The second tertial from distal side of wing was moulted as the last one within this tract of feathers and thereby should be of special interest during plumage examination.

Open access

Radosław Włodarczyk, Tomasz Janiszewski, Krzysztof Kaczmarek, Piotr Minias and Anna Kleszcz

Sexing Common Snipe (Gallinago gallinago) in the Field - is there any Simple Method?

There are a few methods used for sex determination in the Common Snipe. However, all proposed methods are based on data obtained from dead birds. The most important feature is the total length of the outermost tail feather. The performed analysis showed that the vane length was strongly correlated with the total length of this feather. It allowed to predict this measurement having only the vane length. Because the measurement procedure influences the vane length, new ranges of vane length typical for each sex are proposed. However, the analysis of the vane length distribution suggested that there were no two homogenous groups that would represent the two sexes. This supports the prediction that the total feather length should be used rather cautiously as a simple sex trait in the Common Snipe. Also the second trait based on the tail feather colour resulted in overestimation of the proportion of females.

Open access

Mateusz Ściborski, Włodzimierz Meissner, Robert Krupa, Radosław Włodarczyk, Krzysztof Kaczmarek, Rafał Bargiel, Adam Wojciechowski, Aleksandra Raniczkowska, Radosław Kozik and Juliusz Pietrasik

Fieldwork results of wader research stations working in Poland in 2002-2003

Open access

Włodzimierz Meissner, Małgorzata Krupa, Magdalena Remisiewicz, Robert Krupa, Piotr Minias, Krzysztof Kaczmarek, Tomasz Janiszewski, Radosław Włodarczyk, Radosław Kozik, Piotr Rydzkowski, Lucjan Kleinschmidt and Adam Wojciechowski

Results of Fieldwork of Wader Research Stations Working in Poland in 2004-2005

Open access

Szymon Bzoma, Włodzimierz Meissner, Tomasz Janiszewski, Magdalena Wybraniec, Magdalena Remisiewicz, Robert Krupa, Radosław Kozik, Krzysztof Kaczmarek, Anna Kleszcz, Piotr Minias, Radosław Włodarczyk, Krzysztof Lukoszek and Adam Wojciechowski

Fieldwork Results of Wader Research Stations Working in Poland in 2006-2008