Stop-over of migrant Blackcaps (<i>Sylvia atricapilla</i>) on autumn passage through the Polish Baltic coast

Kędzior, Katarzyna

doi:10.2478/v10050-008-0077-z

Cited by 3 publications

(4 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Blackcap migration in central Europe begins in August, is most intensive in September, and ends in early-or mid-October, as shown on the Polish Baltic coast (Kopiec 1997, Kopiec-Mokwa 1999, Polish inland (Tomia³ojae & Stawarczyk 2003) and at the German ringing stations Reit and Mettnau (median dates of the passage were 31 August at Reit and 20 September at Mettnau; Berthold et al 1991), while the median date of autumn migration at Helgoland was 1 October (Hüppop & Hüppop 2004). In Norway, autumn migration also begins in August (Bakken et al 2006), while median dates are similar to those observed in central Europe (Jomfruland: 20 September, Lista: 30 September; Hüppop & Hüppop 2004).…”

Section: Discussionmentioning

confidence: 96%

The origin of Blackcaps Sylvia atricapilla wintering on the British Isles

Kopiec,

Ozarowska

2012

Ornis Fenn

View full text Add to dashboard Cite

A migration route leading central European breeder Blackcaps to their winter quarters in Britain and Ireland was discovered in the 1960s. This phenomenon, representing a rapid evolutionary change of migratory behavior, can be explained by a shift in migration course towards the west and north-west (as opposed to the standard south-west direction) or reverse migration. These hypotheses were evaluated by analyzing the recoveries of Blackcaps either ringed or recovered on the British Isles. Blackcaps arriving in the British Isles from Scandinavia had been ringed over two weeks later than had been birds arriving from Central Western Europe, while no significant difference was found in the recovery dates of birds from these regions. Moreover, birds ringed in Scandinavia were recovered significantly later on the British Isles than in the continental Europe. This finding suggests that two populations migrate through Scandinavia: the local breeding population (migrating towards the south) and another with an unknown origin (possibly Central European, heading towards the north and west). Thus, some of the Blackcaps ringed in Utsira on the Norwegian west coast, and ending up to the British Isles, might be of Central European origin.

show abstract

Section: Discussionmentioning

confidence: 96%

The origin of Blackcaps Sylvia atricapilla wintering on the British Isles

Kopiec,

Ozarowska

2012

Ornis Fenn

View full text Add to dashboard Cite

show abstract

“…Strong wind and low temperature influence migrating birds to similar extent and after retreat birds should continue their migration (Rabøl andPettersen 1973, Mehlum 1983). Internal factors cause birds to restore energy reserves (Pettersson and Hasselquist 1985, Ganness 2002, Kêdzior 2002. The relation between these groups of factors has an effect on duration of flight and stopover (Jenni and Schaub 2004).…”

Section: Factors Influencing Stopover In Migrantsmentioning

confidence: 99%

“…Geographical location, habitat conditions at recapture sites and migratory strategy of species probably play an important role in frequency of birds stopover, time that birds spend at certain area and fat-weight relationship (Karlsson et al 1988, Ehnbom et al 1993, Kêdzior 2002. The aim of our study is to compare stopover duration, body condition (fat reserves, body weight) and age structure of Robins caught at different stopover sites.…”

Section: Introductionmentioning

confidence: 99%

Stopover of Robins (Erithacus rubecula) On Autumn Migration Through the Polish Baltic Coast

Meina

Ginter

Rosińska

2007

Ring

View full text Add to dashboard Cite

Data were collected during autumn migration at three ringing stations of the Operation Baltic: Bukowo-Kopañ, Mierzeja Wilana and Hel. Apart from different localization at the Polish Baltic coast, these places differ also in topography and habitat. Only data from years with the highest number of caught birds were used in the analyses, thus altogether the data on more than 25 500 ringed Robins and 1700 retraps were included. Based on migration dynamics graphs and number of retraps, a stopover index was calculated. Next, the index values were compared between days with a high and low number of caught birds and also between different fat categories. Differences between birds caught once and retraps were shown in relation to daily activity, age structure and fat level. Additionally changes in weight and fat level between first and last control in retraps were considered. At Mierzeja Wilana and Hel the stopover index decreased in the course of autumn season in contrast to Bukowo-Kopañ where an increasing trend was observed. At Bukowo-Kopañ more birds decided to stopover than at Mierzeja Wilana and Hel but at Mierzeja Wilana Robins stayed longer than at other stations. Moreover, at Mierzeja Wilana a half of departing retraps increased in fat level while at the other stations only ca 20% of retraps. Our results showed that in Robins the weak body condition is a decisive factor to stopover after crossing the sea. Differentiation in food resources and competition between individuals had an effect on the stopover index. Stopover duration at different ringing stations can depend on distance which birds cover before landing at the coast.

show abstract

“…This procedure has already been used in some papers (e.g. Busse 1976, Kêdzior 2002, Zakala et al 2004.…”

Section: Introductionmentioning

confidence: 99%

Fat reserves and body mass in some passerines migrating in autumn through the southern Baltic coast

Ścisłowska

Busse²

2005

Ring

View full text Add to dashboard Cite

cis³owska M., Busse P. 2005. Fat reserves and body mass in some passerines migrating in The aim of the present paper is to serve with a huge data set on the fat and body mass of birds that have been caught during the field work of the Operation Baltic since 1983 (earlier data are still not available in a digitalised form). There are given fat score valuations of 38 species and correction factors for the body mass standardisation. Some comments on observed fat scores in species of different migratory habits are added. They should encourage students to continue the research process on a wider scale.

show abstract

Stop-over of migrant Blackcaps (Sylvia atricapilla) on autumn passage through the Polish Baltic coast

Cited by 3 publications

References 12 publications

The origin of Blackcaps Sylvia atricapilla wintering on the British Isles

The origin of Blackcaps Sylvia atricapilla wintering on the British Isles

Stopover of Robins (Erithacus rubecula) On Autumn Migration Through the Polish Baltic Coast

Fat reserves and body mass in some passerines migrating in autumn through the southern Baltic coast

Contact Info

Product

Resources

About