scholarly journals Changes in spring arrival dates of Central European bird species over the past 100 years

Author(s):  
László Bozó ◽  
Tibor Csörgő

Over the past decades, spring temperatures have increased in temperate regions, which resulted in birds arriving earlier in spring. Nonetheless, the timing of some species’ spring migration relies on endogenous rhythms that are not affected by climate change. In this study, we analysed changes in the spring arrival dates of 36 bird species over two periods in 22 towns and villages in Southeast Hungary and West Romania. The first period covered the national spring migration counts between 1894 and 1926, while the second period took place between 2005 and 2019 and is based on our recent observation data. Our results show, that the average spring arrival dates of most long-distance migrant species have not changed significantly over the past 100 years. In contrast, in cases of medium and short-distance migrants, most species arrive earlier recently than in the past. This may be caused by the fact, that the migration habit of long-distance migrants is characterized by strong genetic determinants, so they can not react as quickly to the warmer spring weather in Europe as the medium and short-distance migrants. However, in cases of some long-distance migrants, the timing of spring migration changed due to the drying of wintering grounds.

2021 ◽  
Author(s):  
André Desrochers ◽  
Andra Florea ◽  
Pierre-Alexandre Dumas

We studied the phenology of spring bird migration from eBird and ÉPOQ checklist programs South of 49°N in the province of Quebec, Canada, between 1970 and 2020. 152 species were grouped into Arctic, long-distance, and short-distance migrants. Among those species, 75 significantly changed their migration dates, after accounting for temporal variability in observation effort, species abundance, and latitude. But in contrast to most studies on the subject, we found no general advance in spring migration dates, with 36 species advancing and 39 species delaying their migration. Several early-migrant species associated to open water advanced their spring migration, possibly due to decreasing early-spring ice cover in the Great Lakes and the St-Lawrence river since 1970. Arctic breeders and short-distance migrants advanced their first arrival dates more than long-distance migrants not breeding in the arctic. However, there was no difference among migrant groups when median arrival dates were considered. We conclude that general claims about advances in spring migration dates in eastern North America are misleading due to large taxonomic variation.


2009 ◽  
Vol 5 (4) ◽  
pp. 539-541 ◽  
Author(s):  
Nicola Saino ◽  
Diego Rubolini ◽  
Esa Lehikoinen ◽  
Leonid V. Sokolov ◽  
Andrea Bonisoli-Alquati ◽  
...  

Phenological responses to climate change vary among taxa and across trophic levels. This can lead to a mismatch between the life cycles of ecologically interrelated populations (e.g. predators and prey), with negative consequences for population dynamics of some of the interacting species. Here we provide, to our knowledge, the first evidence that climate change might disrupt the association between the life cycles of the common cuckoo ( Cuculus canorus ), a migratory brood parasitic bird, and its hosts. We investigated changes in timing of spring arrival of the cuckoo and its hosts throughout Europe over six decades, and found that short-distance, but not long-distance, migratory hosts have advanced their arrival more than the cuckoo. Hence, cuckoos may keep track of phenological changes of long-distance, but not short-distance migrant hosts, with potential consequences for breeding of both cuckoo and hosts. The mismatch to some of the important hosts may contribute to the decline of cuckoo populations and explain some of the observed local changes in parasitism rates of migratory hosts.


2008 ◽  
Author(s):  
Robert Heinsohn ◽  
Michael Cermak

The remote, beautiful and poorly known rainforests of Cape York Peninsula tell a special story about Australia’s historic and present-day connections to New Guinea. Life in the Cape York Rainforest highlights these connections by examining the fascinating biology of some of the most spectacular animals shared between the two regions. The author recounts his own ground-breaking research on ‘cross-dressing’ Eclectus parrots, musical palm cockatoos and multi-coloured pythons, together with the exotic lifestyles of other animals, while painting the bigger picture of the past when Australia and New Guinea were joined by extensive land bridges. Australia’s disconnection from New Guinea is probably only temporary, and even today many bird species continue to fly the short distance between the two landmasses. Whether just browsing the beautiful photos and informative captions, or reading it in its entirety, readers will gain a greater understanding of the unique attributes of our Cape York rainforests. The book provides an excellent resource for biologists and environmentalists with an interest in the Top End and New Guinea, tourists to Cape York, conservationists and policy makers, and amateur naturalists, especially ornithologists and herpetologists.


Science ◽  
2007 ◽  
Vol 315 (5812) ◽  
pp. 598c-598c ◽  
Author(s):  
N. Jonzen ◽  
A. Linden ◽  
T. Ergon ◽  
E. Knudsen ◽  
J. O. Vik ◽  
...  

2019 ◽  
Vol 53 (2) ◽  
pp. 141-148
Author(s):  
V. N. Grishchenko

Abstract I studied the effect of North Atlantic Oscillation (NAO) on the phenology of spring migration of birds in Central Ukraine. Data for arrival and departure of 92 species collected in 1987 to 2018 were used. The statistically significant correlation was found for 33 (35.9 %) bird species. 50 coefficients were negative (82.0 %) and 11 ones — positive (18.0 %). The majority of relationships have been shown in February (12) and March (22). In April, they became more rarely (5). There was only one significant value for January and May. For 20 species correlations were found with averaged indices including three months (January to March). The relationships with NAO indices were much commoner for the short-distance migrants (63.3 % of studied species) than for birds wintering in tropical and Southern Africa (20.5 %) and the intermediate group (18.8 %). Wintering birds showed 8 significant coefficients in 3 species (42.9 %). Statistically significant coefficients of correlation ranged in absolute values from 0.35 to 0.80. The average absolute values were very close for different groups of species. The overall mean made 0.50 ± 0.01 (n = 61).


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