Detailed description of the Ócsa Bird Ringing Station, Hungary

Csörgő, Tibor; Harnos, Andrea; Rózsa, Lajos; Karcza, Zsolt; Fehérvári, Péter

doi:10.1515/orhu-2016-0018

Cited by 16 publications

(26 citation statements)

References 24 publications

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“…Here we present exploratory and descriptive statistics on the migration timing and morphometrics of the Song Thrush (Turdus philomelos) between 1984-2016 from a Central European ringing station (Ócsa Bird Ringing Station, Hungary, see Csörgő et al 2016 …”

Section: Introductionmentioning

confidence: 99%

Exploratory analyses ofmigration timing andmorphometrics of the Song Thrush (Turdus philomelos)

Csörgő

Fehérvári

Karcza³

et al. 2017

Ornis Hungarica

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Ornithological studies often rely on long-term bird ringing data sets as sources of information. However, basic descriptive statistics of raw data are rarely provided. In order to fill this gap, here we present the third item of a series of exploratory analyses of migration timing and body size measurements of the most frequent Passerine species at a ringing station located in Central Hungary (1984-2016). First, we give a concise description of foreign ring recoveries of the Song Thrush in relation to Hungary. We then shift focus to data of 4137 ringed individuals and 1051 recaptures derived from the ringing station, where birds have been trapped, handled and ringed with standardized methodology since 1984. Timing is described through annual and daily capture and recapture frequencies and their descriptive statistics. We show annual mean arrival dates within the study period and present the cumulative distributions of first captures with stopover durations. We present the distributions of wing, third primary, tail length and body mass, and the annual means of these variables. Furthermore, we show the distributions of individual fat and muscle scores, and the distributions of body mass within each fat score category. We distinguish the spring and autumn migratory periods, breeding and wintering seasons, and age groups (i.e. juveniles and adults). Our aim is to provide a comprehensive overview of the analysed variables. However, we do not aim to interpret the obtained results, merely to draw attention to interesting patterns that may be worth exploring in detail. Data used here are available upon request for further analyses.

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Section: Introductionmentioning

confidence: 99%

Exploratory analyses ofmigration timing andmorphometrics of the Song Thrush (Turdus philomelos)

Csörgő

Fehérvári

Karcza³

et al. 2017

Ornis Hungarica

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“…Birds were trapped with standard mistnets placed at standard locations throughout the study period. Trapping effort is seasonal and changed over the years (see Csörgő et al 2016 for details).…”

Section: Bird Ringing Datamentioning

confidence: 99%

Exploratory analyses of migration timing and morphometrics of the Common Nightingale (Luscinia megarhynchos)

Csörgő

Fehérvári

Karcza³

et al. 2017

Ornis Hungarica

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Ornithological studies often rely on long-term bird ringing data sets as sources of information. However, basic descriptive statistics of raw data are rarely provided. In order to fill this gap, here we present the fifth item of a series of exploratory analyses of migration timing and body size measurements of the most frequent Passerine species at a ringing station located in Central Hungary (1984–2016). First, we give a concise description of foreign ring recoveries of the Common Nightingale in relation to Hungary. We then shift focus to data of 3892 ringed and 1499 recaptured individuals derived from the ringing station, where birds have been trapped, handled and ringed with standardized methodology since 1984. Timing is described through annual and daily capture and recapture frequencies and their descriptive statistics. We show annual mean arrival dates within the study period and present the cumulative distributions of first captures with stopover durations. We present the distributions of wing, third primary, tail length and body mass, and the annual means of these variables. Furthermore, we show the distributions of individual fat and muscle scores, and the distributions of body mass within each fat score category. We distinguish the spring and autumn migratory periods and breeding season and age groups (i.e. juveniles and adults). Our aim is to provide a comprehensive overview of the analysed variables. However, we do not aim to interpret the obtained results, merely to draw attention to interesting patterns that may be worth exploring in detail. Data used here are available upon request for further analyses.

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“…Our template dataset is of Pied Flycatchers trapped and ringed at the Ócsa Bird Ringing Station (Central Hungary) between 1984-2014 (for details see Harnos et al 2015b, Csörgő et al 2016, Harnos et al 2016b). The dataset is available through our ringR (ringr.…”

Section: Introductionmentioning

confidence: 99%

“…(For more detailed explanation see e.g. Carpenter & Kenward 2012, Little 2016 For instance, consider a ringer who decides to neglect body mass measurements for individuals with brood patches, in order to reduce handling time for potentially incubating individuals. In this case missing values will depend on a binary variable 'brood patch presence'.…”

Section: Introductionmentioning

confidence: 99%

Hitchhikers’ guide to analysing bird ringing data

2017

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This paper is the third part of our bird ringing data analysis series (Harnos et al. 2015a(Harnos et al. , 2016a) in which we continue to focus on exploring data using the R statistical environment. Here, we give a short description of missing data patterns, then handling and visualization techniques that help simultaneously explore the data and the structure of missing values. We try to emphasize that missing data can seriously distort the results of the analyses, therefore the conclusions drawn.Keywords: missing data pattern, exploration of incomplete data Összefoglalás Sorozatunk harmadik részében folytatjuk a madárgyűrűzési adatok kezelését, elemzését az R statisztikai program használatával (Harnos et al. 2015a(Harnos et al. , 2016a. Röviden bemutatunk hiányzó adat mintázatokat, kezelésüket és azt, hogy hogyan lehet a meglévő adatokat és a hiányzó adatok struktúráját szimultán feltárni különböző ábrázolási módszerekkel. Egyúttal szeretnénk felhívni a figyelmet arra, hogy a hiányzó adatok komoly mértékben torzíthatják az elemzések eredményeit és a belőlük levont következtetéseket.Kulcsszavak: hiányzó adatok mintázata, hiányzó adatok feltárása

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Detailed description of the Ócsa Bird Ringing Station, Hungary

Cited by 16 publications

References 24 publications

Exploratory analyses ofmigration timing andmorphometrics of the Song Thrush (Turdus philomelos)

Exploratory analyses ofmigration timing andmorphometrics of the Song Thrush (Turdus philomelos)

Exploratory analyses of migration timing and morphometrics of the Common Nightingale (Luscinia megarhynchos)

Hitchhikers’ guide to analysing bird ringing data

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