The ratios of adult and young birds during autumn migration on Courish Spit of the Baltic Sea at 25 short- and 19 long distance migrants trapped from 1962 to 2016 was analysed. The comparative analysis showed that the proportion of adult individuals among the birds caught in Rybachy-type traps was significantly higher at short distance migrants (19,4%), than at long distance (5,4%). At the species migrating mainly daytime, the proportion of adult birds was higher, than at nocturnal migrants (24,3% against 7,4% at short distance and 7,4% against 4,5% – at long distance migrants). At the majority of species considerable interannual fluctuations in the ratio of adult and young birds were revealed. However significant long-term trends in change of this ratio were revealed only at 3 species of short distance and one long distance migrants. The proportion of the young birds caught in autumn was significantly connected with average air temperature in the Baltic region in the spring and at the beginning of summer (June): the temperature during this period was higher, the large ratio of young migrants was present at autumn catching. Such correlation was revealed at 8 species of short- and 2 long distance migrants. We believed that annual variation of the age ratios depend, first of all, on different levels of reproduction success of adult birds in population.
Drury, W.N., Keith, J.A. (1962). Radar studies of songbird migration in coastal New England. Ibis, 104 (3), 449–489.
Dunn, E.H., Nol, E. (1980). Age-related migratory behavior of warblers. Journal Field Ornithology, 51 (3), 254–269.
Evans, P.R. (1968). Reorientation of passerine night migrants after displacement by the wind. British Birds, 61 (7), 281–303.
Jenni, L. (1984). Herbstzugmuster von Vögeln auf dem Col de Bretolet unter besonderer Berückichtigung nachbrutzeitlicher Bewegungen. Ornithologische Beobachter, 81 (3), 183–213.
Murray, B.C. (1966). Migration of age and sex classes of passerines on the Atlantic coast in autumn. Auk, 83 (3), 352–360.
Newton, I. (1999). Age ratios in a Bullfinch Pyrrhula pyrrhula population over six years. Bird Study, 46 (3), 330–335.
Payevsky, V.A. (1982). Age structure of passerine birds (Passeriformes, Aves), migrating along eastern coast of the Baltic Sea. Zoologicheskiy zhurnal, 61(8), 1218–1227 (in Russian)
Payevsky, V.A. (1985). Demography of birds. Leningrad: Nauka. 285 p. (in Russian).
Payevsky, V.A. (1998). Age structure of passerine migrants at the eastern Baltic coast: the analysis of the «coastal effect». Ornis svecica, 8 (4), 171–178.
Payevsky, V.A. (2000). Rybachy-type trap. In: Busse, P. (Ed.), Bird Station Manual (pp. 20–24). Gdańsk University, Gdańsk.
Payevsky, V.A. (2008). Demographic structure and population dynamics of songbirds. Moscow-St. Petersburg: KMK Scientific Press Ltd. 235 p. (in Russian).
Payevsky, V.A. (2015). True Finches of the world. Moscow: KMK Scientific Press Ltd. 272 p. (in Russian).
Payevsky, V.A., Shapoval, A.P. (2002). Long-term monitoring of annual and seasonal differences in age structure of migratory passerine birds. Proceeding of International Symposium”Long-term dynamic of bird and mammal populations and global climatic changes”, Kazan: “Novoe znanie”, 83–89.
Pearson, D., Buckhurst, G., Jackson, C. (2014). The study and ringing of Palaearctic birds at Ngulia Lodge, Tsavo West National Park, Kenya, 1969-2012: an overview and update. Scopus, Special Supplement 4.
Poluda, A.M. (1991). Age and sex structure of transient groups of some bird species on the north Ukraine. Results of ringing and marked birds. Moscow: Nauka, 29–32 (in Russian).
Ralph, C.J. (1971). An age differential of migrants in coastal California. Condor, 73 (2), 243–246.
Ralph, C.J. (1978). Disorientation and possible fate of young passerine coastal migrants. Bird-Banding, 49 (3), 237–247.
Ralph, C.J. (1981). Age ratios and their possible use in determining autumn routes of passerine migrants. Wilson Bulletin, 93 (2), 164–188.
Shapoval, A.P. (1981). Diurnal bird passage over Kurishe Nehrung during autumn 1977 according to trapping by stationary traps. Dolnik V.R. (Ed.) Methods of bird migration discovery and estimation. Leningrad, 51–54 (in Russian).
Shapoval, A.P. (1986). Vozrastnoje sootnoshenije u zarjanki na Kurshskoj kose Baltijskogo morja vo vremja sesonnich peremestchenij v raznyje phasy migracionnoj sutotchnoj aktivnosti. Izutchenije ptic SSSr, ich ochrana I racionalnoje ispolsovanije. Tezysi dokladov I sjezda Vsesojuznogo ornitologitcheskogo obstchestva i IX Vsesojuznoj ornitologitcheskoj konferencii. 2. Leningrad 329–330 (in Russian).
Shapoval, A.P. (2001). Godovyje I sezonnije razlitchija vozrastnogo sostava migrirujustchich vorobjinych ptic po dannim otlova. Aktualnije problemy izutchenija I ochrany ptic Vostotchnoj Evropy I Severnoj Asii. Meterialy mezhdunarodnoj XI ornitologitcheskoj konferenciji Severnoj Evrasii. Kazan, 643 (in Russian).
Shapoval, A.P., Shapoval, E.A. (2018). Vozrastno-polovoj sostav pogibshich ptic nad akvatorijej Baltijskogo vorja. Tezisy dokladov I Vserossijskogo Kongressa. Tver, 348–349 (in Russian).
Sokolov, L.V. (1999а). Population dynamics of passerine birds. Zoologicheskiy zhurnal, 78 (3), 311–324 (in Russian).
Sokolov, L.V. (1999б). Population dynamics in 20 sedentary and migratory passerine species of the Courish Spit on the Baltic Sea. Avian Ecology and Behaviour, 3, 1–28.
Sokolov, L.V. (2007). Global climate warming and dynamics of the numbers of passage bird populations in Europe. Proceedings Russian Scientific Symposium «Dynamics of number birds», Moscow: 8–24 (in Russian).
Sokolov, L.V. (2010). Climate in the Life of Plants and Animals. Tessa, Saint Petersburg: 343 p. (in Russian).
Sokolov, L.V., Baumanis, J., Leivits, A., Poluda, A.M., Yefremov, V.D., Markovets, M.Yu., Shapoval, A.P. (2001). Comparative analysis of long-term monitoring data on numbers of passerines in nine European countries in the second half of the 20th century. Avian Ecology and Behaviour, 7, 41–74.
Sokolov, L.V., Markovets, M.Yu., Yefremov, V.D., Shapoval, A.P. (2002). Irregular migrations (irruptions) in six bird species on the Courish Spit on the Baltic Sea in 1957-2002. Avian Ecology and Behaviour, 9, 39–53.
Sokolov, L.V., Markovets, M.Yu., Shapoval, A.P. (2017а). Long-term monitoring of breeding and transient bird populations on the Courish Spit of the Baltic Sea. Proceedings of the Zoological Institute RAS, 321 (1), 72–88 (in Russian).
Sokolov, L.V., Markovets, M.Yu., Shapoval, A.P. (2017б). The impact of climate on the long-term fluctuation of bird numbers in the Baltic region. Proceedings of the Russian Scientific Conference. ZBS MSU. Moscow: КМК Scientific Press, 24–32 (in Russian).
Sokolov, L.V., Shapoval, A.P., Yakovleva, M.V. (2013). Long-term monitoring irruptions of the Great Spotted Woodpecker Dendrocopos major in the Baltic region and Karelia. Russian Ornithological Journal, 969 (23), 467–494 (in Russian).
Sokolov, L.V., Tropp, E.А., Morozov Yu.G., Yefremov, V.D. (2002). Effect of the temperature factor on long-term fluctuation in the numbers of passerine birds. Doklady Academia Nauk, 384 (3), 426–429 (in Russian).
Sokolov, L.V., Yefremov, V.D., Markovets, M.Yu., Shapoval, A.P., Shumakov, M.E. (2000). Monitoring of numbers of passage populations of passerines over 42 years (1958-1999) on the Courish Spit of the Baltic Sea. Avian Ecology and Behaviour, 4, 31–53.
Stewart, R.M., Mewaldt, L.R., Kaiser, S. (1974). Age ratios of coastal and inland fall migrant passerines in central California. Bird Banding, 45, 46–57.
Svensson, L. 1992. Identification Guide to European Passerines. Stockholm. 368 p.
Vinogradova, N.V., Dolnik, V.R., Efremov, V.D., Payevsky, V.A. (1976). Determining age and sex of the Passerines of the Soviet Union. Moscow. 189 p. (in Russian).
Acta Biologica Sibirica is a golden publisher, as we allow self-archiving, but most importantly we are fully transparent about your rights.
Authors may present and discuss their findings ahead of publication: at biological or scientific conferences, on preprint servers, in public databases, and in blogs, wikis, tweets, and other informal communication channels.
ABS allows authors to deposit manuscripts (currently under review or those for intended submission to ABS) in non-commercial, pre-print servers such as ArXiv.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License (CC BY 4.0) that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).