Timing and pattern of the post‐breeding migration of some species of passerines through Lombardy, Northern Italy

Schubert, Mia; Fedrigo, Alessandra; Massa, R.

doi:10.1080/03078698.1986.9673874

Cited by 11 publications

(16 citation statements)

References 2 publications

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“…Most of the birds ringed in the Czech Republic migrate south-southwest, via Austria, Germany and Switzerland, but a smaller proportion of the population migrates northwest to Belgium, northern France and Britain (Klvaňa 2008). In agreement with the above, morphometrics of first-captures in Italy show an increase in average wing length during the most intense phases of the autumn passage, likely due to the presence of birds of more northern origin (Schubert et al 1986, Spina & Volponi 2008.…”

Section: For Details)supporting

confidence: 62%

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Exploratory analyses ofmigration timing andmorphometrics of the Common Blackbird (Turdus merula)

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 fourth 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 Blackbird in relation to Hungary. We then shift focus to data of 6849 ringed individuals and 6081 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, ages (i.e. juveniles and adults) and the two sexes. 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: For Details)supporting

confidence: 62%

“…In Lombardy capture frequencies peak in the first decade of October, while in more southern regions the peak occurs in the last decade. The intensity of migration gradually decays in November and completely halts by the first decade of December (Schubert et al 1986, Spina & Volponi 2008.…”

Section: For Details)mentioning

confidence: 99%

Exploratory analyses ofmigration timing andmorphometrics of the Common Blackbird (Turdus merula)

Csörgő

Fehérvári

Karcza³

et al. 2017

Ornis Hungarica

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“…The birds arrive in northern Italy and southern France in October and most of them fly to the Iberian Peninsula and North Africa (Klvaňa 2008). The median arrival date is in mid-September for Reit (Northern Germany) and early October for Mettnau and a few days later for Illmitz (north of the Alpine ridge (Bairlein 1981in Schubert et al 1986. Arrival median date is the third week of October in Lombardy (Schubert et al 1986).…”

Section: For Details)mentioning

confidence: 99%

“…The median arrival date is in mid-September for Reit (Northern Germany) and early October for Mettnau and a few days later for Illmitz (north of the Alpine ridge (Bairlein 1981in Schubert et al 1986. Arrival median date is the third week of October in Lombardy (Schubert et al 1986). The first thrushes ringed abroad are recorded in Italy in August, but trapping frequency increases considerably only from the second half of September, peaking between the end of October and early November.…”

Section: For Details)mentioning

confidence: 99%

“…Recoveries of foreign birds ringed during the breeding period and on autumn migration indicated three different routes toward Italy: a southwest route from Central and East Europe (southern Poland, Germany, Czech Republic, Slovakia, Austria, Hungary), one from the Baltic region (northern Poland, Baltic Republics, Finland and Russia), and a south-southeast route from Switzerland and eastern France. High frequencies of high fat score birds are recorded during the most intense phases of the autumn movements (Busse & Maksalon 1986, Schubert et al 1986, Andreotti et al 1999, Thomson 2002, Huttunen 2004, Bønløkke et al 2006, Milwright 2006, Fransson & Hall-Karlsson 2008, Klvaňa 2008, Spina & Volponi 2008, Budinski 2013, Bairlein et al 2014, Busse et al 2014, Valkama et al 2014.…”

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confidence: 99%

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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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Diet of breeding Eleonora's falconFalco eleonoraein Algeria: Insights for the autumn trans‐Mediterranean avian migration

Samraoui

Kayser

Touati

et al. 2022

Ecology and Evolution

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How environmental changes are affecting bird population dynamics is one of the most challenging conservation issues. Dietary studies of top avian predators could offer scope to monitor anthropogenic drivers of ecosystem changes. We investigated the diet of breeding Eleonora's falcon in an area of Northeastern Algeria in the years 2010–2012. Feathers and insect remains originating from prey plucking behavior were analyzed, providing insights into the seasonally changing diet of this raptor, as well as the trans‐Mediterranean avian migration. A total of 77 species of birds (16 Sylviidae, 11 Turdidae, and 4 Emberizidae), 3 species of insects, and 1 lizard were identified among prey remains, reflecting a diverse diet. Diet composition and prey abundance varied seasonally, faithfully correlating with the passage of migrant birds as recorded from bird ring recoveries. Our findings suggest that dietary studies of predators might be deployed to investigate changes in bird migration. We discuss our results in the context of trans‐Mediterranean migration, with early‐season prey mainly comprising trans‐Saharan migrants (Apus apus and Merops apiaster) and late‐season prey being dominated by Mediterranean winter migrants (Erithacus rubecula, Turdus philomelos, Sylvia atricapilla, and Sturnus vulgaris). Notably, we observed a significant reduction in species richness of passerine remains in 2012, potentially highlighting a decline in the diversity of avian migrants.

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Timing and pattern of the post‐breeding migration of some species of passerines through Lombardy, Northern Italy

Cited by 11 publications

References 2 publications

Exploratory analyses ofmigration timing andmorphometrics of the Common Blackbird (Turdus merula)

Exploratory analyses ofmigration timing andmorphometrics of the Common Blackbird (Turdus merula)

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

Diet of breeding Eleonora's falconFalco eleonoraein Algeria: Insights for the autumn trans‐Mediterranean avian migration

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