Autumn Migration Strategies of Reed and Sedge Warblers

1981 ◽  
Vol 12 (1) ◽  
pp. 1 ◽  
Author(s):  
C. J. Bibby ◽  
R. E. Green
Keyword(s):  
Autumn Migration ◽  
Migration Strategies

scholarly journals Seasonal differences in migration strategies of Red Kites (Milvus milvus) wintering in Spain

2021 ◽  
Author(s):  
Jorge García-Macía ◽  
Javier Vidal-Mateo ◽  
Javier De La Puente ◽  
Ana Bermejo ◽  
Rainer Raab ◽  
...  
Keyword(s):  
Spring Migration ◽  
Great Variability ◽  
Autumn Migration ◽  
Seasonal Differences ◽  
North Eastern ◽  
Wintering Areas ◽  
Satellite Transmitters ◽  
Migration Strategies ◽  
Migratory Movements ◽  
Milvus Milvus

AbstractRed Kite shows a great variability in its migration strategies: most individuals in north-eastern Europe are migrants, but there is also a growing number of sedentary individuals. Here, we tagged 49 Red Kites wintering in Spain with GPS/satellite transmitters between 2013 and 2020 to study the autumn and spring migration between the breeding or summering areas in Central Europe and the wintering quarters in Spain. In first place, differences between immatures and adults were found for spring migration. Adults began the spring migration towards the northeast in February–March while the immature individuals began to migrate significantly later and showing a wider date range (February-June). Adults also takes significantly less days to arrive at their destinations (12 ± 5 days) and cover more distance per day (134.2 ± 37.1 km/day) than immatures (19 ± 11 days and 98.9 ± 21.2 km/day). In second place, we also found differences between spring and autumn migration (excluding immatures). Spring migrations were clearly faster and with less stopovers days than autumn migrations. Autumn migration began between mid-October and late November and two different behaviours were observed: most birds made a quick migration direct to the wintering areas with only some days of stopovers, but others prolonged the migration with long stops along the route. These results highlight a great variation in the migratory movements of Red Kite, not only according to age but also between individuals and seasons.

scholarly journals Autumn Migration Of The Thrush Nightingale (Luscinia Luscinia) In Northern Hungary

Ring ◽  
2012 ◽  
Vol 34 (1) ◽  
pp. 23-36 ◽  
Author(s):  
Dávid Kováts
Keyword(s):  
Arrival Time ◽  
Wing Length ◽  
Age Groups ◽  
Autumn Migration ◽  
Stopover Site ◽  
Migration Strategies ◽  
Median Date ◽  
The Mean ◽  
Fat Score ◽  
Thrush Nightingale

Abstract Kováts D. 2012. Autumn migration of the Thrush Nightingale (Luscinia luscinia) in northernHungary. Ring 34: 23-36. The autumn migration of the Thrush Nightingale was studied in Szalonna in northern Hungary in 1989-2010. Birds were mist-netted, ringed, aged, measured, weighed and fat scored. In total, 193 Thrush Nightingales were ringed during 22 years. Relations between arrival time and biometrical measurements were determined. Within the study period (6 August - 26 September) the migration curve was bimodal showing maximum on 22 August and 27 August. Immature birds arrived significantly earlier with lower body mass and shorter wing length and had more pointed wings in the first half of their passage. The distribution of fat score classes did not differ significantly between the early and late periods of the most intensive migration, although the mean of the deposited fat was the lowest during the peak of migration. Fat reserve distribution was bimodal in autumn suggesting that Thrush Nightingales probably start their journey from different breeding ranges (populations) or follow still undiscovered migration strategies of sex/age groups. The low proportion of recaptures proved that the area was not used as a stopover site or premigratory fattening area. Within 22 years of study, the median date of autumn migration of Thrush Nightingales shifted 7.9 days earlier, probably due to current climate change.

A comparison of autumn migration strategies in robinserithacus rubeculaat a coastal and an inland site in southern Sweden

1993 ◽  
Vol 14 (2) ◽  
pp. 84-93 ◽  
Author(s):  
Sophie Ehnbom ◽  
Lennart Karlsson ◽  
Roland Ylvén ◽  
Susanne Åkesson
Keyword(s):  
Autumn Migration ◽  
Southern Sweden ◽  
Migration Strategies

scholarly journals Annual Long-Distance Migration Strategies and Home Range of Chinese Sparrowhawk (Accipiter soloensis) from South China

Animals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2237
Author(s):  
Xiao Min ◽  
Zijing Gao ◽  
Yuanfeng Lin ◽  
Chang-Hu Lu
Keyword(s):  
Home Range ◽  
Southern China ◽  
Hunan Province ◽  
Autumn Migration ◽  
Migration Routes ◽  
Range Analysis ◽  
Long Distance ◽  
South Central ◽  
Migration Strategies ◽  
Nuclear Domains

From 2018 to 2019, two Chinese Sparrowhawks (Bird 01, male; Bird 02, female), Accipiter soloensis, were captured and fitted with Global Positioning System (GPS) loggers in order to identify summering and wintering sites, migration routes, and stop-over sites. The Chinese Sparrowhawks were first fitted with backpack solar GPS satellite trackers in China in order to explore their migration routes. The two Chinese Sparrowhawks successfully completed their migration from southern China, through Nanning city of Guangxi province, China, to Vietnam, Laos, Myanmar, Thailand, Malaysia, and Singapore and finally arriving in Indonesia, where they stayed until the March of the following year. They then returned to China along the original route, arriving in Changsha city, Hunan province, China. The two individuals traveled more than 4000–5000 km. For the first time, telemetry data demonstrate, the linkages between their Indonesia wintering sites, their stop-over sites in Southeast Asia, and their breeding/summering sites near south Yangtze River in the south-central part of China. During this long-distance migration, 2653 bird satellite sites were received. The autumn migration durations for the two Chinese Sparrowhawks were 84 days and 50 days, respectively, compared to 83 days and 49 days in spring. The median stop-over duration was 12.7 and 9.3 days, respectively and the median speed of travel was 74.2 km/day during the autumn migration and 73.9 km/day during the spring migration. Furthermore, two and one stop-over sites and one and three stop-over sites were used during the autumn and spring migrations of Chinese Sparrowhawks 01 and 02, respectively. The Chinese Sparrowhawks migrated long distances and used stop-over sites during their migration. Based on the home range analysis, we can conclude that Chinese Sparrowhawks reach their maximum home range in the summer and have multiple nuclear domains.

scholarly journals Alternate non-stop migration strategies of pied flycatchers to cross the Sahara desert

2016 ◽  
Vol 12 (4) ◽  
pp. 20151060 ◽  
Author(s):  
Janne Ouwehand ◽  
Christiaan Both
Keyword(s):  
Frequent Occurrence ◽  
Autumn Migration ◽  
Sahara Desert ◽  
Migration Strategy ◽  
Intermittent Flight ◽  
Migration Strategies

Each year more than two billion songbirds cross the Sahara, but how they perform this formidable task is largely unknown. Using geolocation tracks from 27 pied flycatchers, a nocturnally migrating passerine, we show that most birds made diurnal flights in both autumn and spring. These diurnal flights were estimated to be part of non-stop flights of mostly 40–60 h. In spring, birds flew across the Sahara, while autumn migration probably circumpassed part of the desert, through a long oversea flight. Our data contradict claims that passerines cross the Sahara by intermittent flight and daytime resting. The frequent occurrence of long non-stop flights to cross the desert shows migrants' physiological abilities and poses the question why this would not be the general migration strategy to cross the Sahara.

scholarly journals Migration Strategies of Common Buzzard (Buteo buteo Linnaeus, 1758) in Dobruja

2017 ◽  
Vol 60 (2) ◽  
pp. 537-545
Author(s):  
Cătălin-Răzvan Stanciu ◽  
Răzvan Zaharia ◽  
Gabriel-Bogdan Chişamera ◽  
Ioana Cobzaru ◽  
Viorel-Dumitru Gavril ◽  
...  
Keyword(s):  
Spring Migration ◽  
Autumn Migration ◽  
Migration Behavior ◽  
Significant Activity ◽  
Long Distance ◽  
Common Buzzard ◽  
Time Period ◽  
Migration Strategies ◽  
The Common ◽  
Vantage Points

Abstract We studied various aspects regarding migration behavior of the Common Buzzard for two subspecies (B. b. buteo and B. b. vulpinus) transiting the region which overlaps with the Western Black Sea Corridor. Using vantage points set across Dobruja we managed to count 2,662 individuals. We highlighted the seasonal and diurnal peak passage, flight directions and height of flight for each season. Our results suggest that 57% of the counted individuals belongs to long-distance migrant Steppe Buzzard - B. b. vulpinus. The peek passage period in autumn migration was reached between the 26th of September to the 6th of October, while for the spring migration peek passage remained uncertain. The main autumn passage direction was from N to S, and NNW to SSE but also from NE to SW. For spring passage the main direction was from S to N but also from ESE to WNW. Flight height during autumn migration was mostly at high altitude while in spring migration was more evenly distributed. The most significant activity was recorded in the second time period, between 10:01 and 13:00 (43%).

scholarly journals Autumn migration strategies of the Sedge WarblerAcrocephalus schoenobaenusin northern Italy

1997 ◽  
Vol 18 (1) ◽  
pp. 59-67 ◽  
Author(s):  
Paolo Basciutti ◽  
Osvaldo Negra ◽  
Fernando Spina
Keyword(s):  
Northern Italy ◽  
Autumn Migration ◽  
Migration Strategies

Influence of macrosynoptic weather situation on the autumn migration of birds in Hungary

Ring ◽  
2003 ◽  
Vol 25 (1-2) ◽  
pp. 17-36 ◽  
Author(s):  
József Gyurácz ◽  
Gábor Horváth ◽  
Tibor Csörgõ ◽  
László Bank ◽  
Sándor Palkó
Keyword(s):  
Cold Front ◽  
Bird Species ◽  
Autumn Migration ◽  
Weather Situation ◽  
Significant Difference ◽  
Migration Strategies

Influence of macrosynoptic weather situation on the autumn migration of birds in HungaryIn the study we have examined the relation between the European macrosynoptic weather situation and the number of birds captured a day at four Hungarian ringing stations during the autumn migration. Along the research we examined the data of 32 809 individuals of 8 species using different migration strategies. Using the daily capture data at the four stations we constructed the migration diagrams for each year. We chose the migration peak days within ten-day periods and examined how these peak days or their preceding days are distributed over Péczely's macrosynoptic weather situations. Comparing the 8 bird species no significant difference in distribution of the peak days over the macrosynoptic weather situations was found (ANOVA:F7,376= 1.81,p= 0.084). 85% of the migration peak days for all the species were connected with anticyclones, 10% with meridional cyclone / cold front situation and 5% with other cyclonic ones. The most frequent weather situation on the migration peak days was central anticyclone, which occurred in 61 cases.

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