<abstract xmlns="http://www.w3.org/1999/xhtml">Forests have an important role during migration. They act as ecological corridors and provide resting and feeding places for birds. In our study, we sought to determine whether migratory birds prefer secondary forest or canal vegetation during migration. The study was carried out in Southeast Hungary, in an oleaster forest and in a canal. We used 12 mist nets and the ringing method. The study period lasted from August to October 2016–2018, covering approximately the entire migration period. According to our results, the canal has a significant effect on the species assemblage, as it functions as a migration corridor during migration, most likely not only for diurnal migrants, but for nocturnal migrants as well. Our results showed that the presence of both woody and berry plants had some influence on the species composition. Interestingly, the presence of berries had a positive effect on the presence of insectivorous birds.</abstract>

Department of Systematic Zoology and Ecology

The Role of a Water Canal and Secondary Forest for Migrants

<abstract xmlns="http://www.w3.org/1999/xhtml">The waterbird community structures of two sub-Himalayan wetlands (Nararthali and Rasomati) situated in forested areas were compared during the wintering period. These wetlands had similar geophysical features but were subject to different conservation efforts. Sixty species of waterbirds, including four globally threatened species, were recorded during the study. Nararthali was found to be more densely inhabited (116.05±22.69 ind./ha) by birds than Rasomati (76.55±26.47 ind./ha). Density increased by 44.6% at Nararthali and by 59% at Rasomati over the years of the study, from 2008 to 2015. Winter visitors increased considerably at Nararthali (66.2%), while a 71.1% decrease at Rasomati clearly indicated degradation of habitat quality at that site during the later years. Luxuriant growth of <italic>Eichhornia crassipes, siltation, poor maintenance and unregulated tourist activities were the key factors leading to the rapid degradation of Rasomati. Nararthali, on the other hand, a well-managed wetland habitat, showed an increasing trend in bird densities. Therefore, poor</italic> habitat management and rapid habitat alterations were observed to be the main reasons for depletion of bird density in the wetlands of eastern sub-Himalayan forest regions.</abstract>

Community Structure of Migratory Waterbirds at Two Important Wintering Sites in a Sub-Himalayan Forest Tract in West Bengal, India

<abstract xmlns="http://www.w3.org/1999/xhtml">The Citrine Wagtail has been gradually expanding its breeding range from Asia westward into Europe since the middle of the last century. New breeding records of this species further to the west of Europe have emerged during the last several decades. The distribution of the Citrine Wagtail in Western Ukraine began at the end of the last century. A total of 48 Citrine Wagtails were ringed in August 1995–2016 at the Cholgynskyy ornithological reserve (West-Ukrainian Ornithological Station). The birds were recorded mainly in the first half of August, peaking from the beginning of the second decade to the middle of the month. At the beginning of August there were wagtails in different stages of moult. Adult moulted birds were recorded from the beginning of the second decade of August, while juvenile birds underwent partial moult during the first part of the month. The mean weight of adult moulted birds was higher than that of juveniles. At the beginning of August many Citrine Wagtails were lean, without fat reserves, with the mean fat class increasing by the end of the month. The autumn passage of <italic>M. citreola</italic> took place in W. Ukraine. Birds stay in the shallow waters, pastures, and reed beds to feed, overnight, moult and gain fat reserves for migration.</abstract>

The Autumn Migration of the Citrine Wagtail, Motacilla Citreola, in the Lviv Region (W. Ukraine) During its Range Expansion

<abstract xmlns="http://www.w3.org/1999/xhtml">One of the most effective methods of studying the migratory patterns of nocturnal passerine migrants is the use of orientation cages as a supplementary procedure at ringing sites. The most comprehensive studies using orientation cages (Busse’s Flat Orientation Cage) were conducted within the SEEN network (SE European Bird Migration Network), with more than 43,000 tests performed at more than 40 ringing sites in autumn. A number of papers were published based on these data, presenting an overall pattern of passerine migration over SE Europe-Middle East-NE Africa. For more detailed analyses, it was first necessary to solve some methodical problems within case studies. The current work presents details for discussion based on data from 1338 tests of Blackcaps performed during the years 1995–2010 at a single ringing station, Bukowo/Kopań, located on the Polish Baltic coast. The birds were tested according to the standard methodology of the SEEN network (Busse 2000). The problems investigated were (1) the repeatability of heading patterns obtained in different years, (2) the linearity of the estimated arrival and departure headings, and (3) quantitative aspects of the results in the description of the heading pattern when migratory groups are found.It was determined that (1) yearly heading patterns were generally coherent and could be analysed as uniform case data; (2-1) the hypothesis that the arrival/departure heading axes are generally linear is accurate to within about one 10° sector, at least in the case of the Blackcap. This is coherent with impressions from other known data sets, but does not mean that the rule always applies to all species at every location on the migration route. In the future, this problem should be studied on a more detailed scale. It was further established that (2-2) estimating arrival and departure headings makes it possible to define migratory groups (populations) passing the study site. The direct heading estimation procedure seems to be more sensitive in identifying migratory groups than the calculation procedure. Moreover, (3-1) the calculation procedure makes it possible to estimate some quantitative properties of headings of migratory groups and define some interesting, though preliminary, number patterns of local migratory patterns; (3-2) the number relations between birds demonstrating the arrival and departure headings of the migratory group seem to be an interesting parameter for study on the distance of migration of groups within a species and, possibly, between species. This is another interesting problem that cage tests could be used to solve in the future. Finally, (3-3) knowledge about trends of individual populations passing the defined site becomes accessible only using analysis of data from orientation cages. The estimated quantitative indices discussed above could be helpful in presenting the general migratory pattern of the species on a geographical scale.</abstract>

An Analysis of Orientation Cage Field Data – A Case Study of Headings of the Blackcap, <italic>Sylvia atricapilla</italic>, at the Bukowo/Kopań Ringing Site in Poland

AHEAD OF PRINT

Volume 43 (2021): Issue 1 (December 2021)

Volume 42 (2020): Issue 1 (December 2020)

Volume 41 (2019): Issue 1 (December 2019)

Volume 40 (2018): Issue 1 (December 2018)

Volume 39 (2017): Issue 1 (December 2017)

Volume 38 (2016): Issue 1 (December 2016)

Volume 37 (2015): Issue 1 (December 2015)

Volume 36 (2014): Issue 1 (December 2014)

Volume 35 (2013): Issue 1 (December 2013)

Volume 34 (2012): Issue 1 (December 2012)

Volume 33 (2011): Issue 1-2 (December 2011)

Volume 32 (2010): Issue 1-2 (December 2010)

Volume 31 (2009): Issue 2 (December 2009)

Volume 31 (2009): Issue 1 (June 2009)

Volume 30 (2008): Issue 1-2 (December 2008)

Volume 29 (2007): Issue 1-2 (December 2007)

Volume 28 (2006): Issue 2 (December 2006)

Volume 28 (2006): Issue 1 (June 2006)

Volume 27 (2005): Issue 2 (December 2005)

Volume 27 (2005): Issue 1 (June 2005)

Volume 26 (2004): Issue 2 (December 2004)

Volume 26 (2004): Issue 1 (June 2004)

Volume 25 (2003): Issue 1-2 (December 2003)

Volume 24 (2002): Issue 2 (December 2002)

The Ring

 The on-line version of the journal is a primary one to the printed edition. The Ring is an international journal dealing with problems of bird ringing, migration and monitoring bird numbers. The main fields of interest are original papers, review articles and methodical discussions. Information, progress reports, personal comments and short notes or news are also accepted to the informative columns of the journal. Although papers are refereed, conclusions, opinions and discussion are published on the author's responsibility. Innovative and even controversial ideas are appreciated.  Why subscribe and read  Excellent source of high quality research on bird migration; original articles on:   migration strategies (long jumps vs. short jumps; stopover ecology; fattening strategy; obligatory vs. partial migration, etc.);  migratory patterns (breeding/wintering areas and flyways; migration dynamics and phenology, distances and migration speed, etc.);  populational differentiation of migrating birds (incl. mechanisms isolating different populations, morphological differentiation and morphometrics studies, etc.);  long-term monitoring of migratory bird populations.   Why submit   transparent, comprehensive and fast peer review,  innovative ideas are appreciated.   Rejection Rate   About 10%   Archiving  Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.  Plagiarism Policy  The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process. 

The Ring

Volume 42 (2020): Issue 1 (December 2020)

The Role of a Water Canal and Secondary Forest for Migrants

Community Structure of Migratory Waterbirds at Two Important Wintering Sites in a Sub-Himalayan Forest Tract in West Bengal, India

The Autumn Migration of the Citrine Wagtail, Motacilla Citreola, in the Lviv Region (W. Ukraine) During its Range Expansion

An Analysis of Orientation Cage Field Data – A Case Study of Headings of the Blackcap, Sylvia atricapilla, at the Bukowo/Kopań Ringing Site in Poland

Suche

Alle Bände und Hefte dieser Zeitschrift