Concurrent shifts in wintering distribution and phenology in migratory swans: Individual and generational effects

  title={Concurrent shifts in wintering distribution and phenology in migratory swans: Individual and generational effects},
  author={Rascha J. M. Nuijten and K. A. Wood and Trinus Haitjema and Eileen C. Rees and Bart A. Nolet},
  journal={Global Change Biology},
  pages={4263 - 4275}
Range shifts and phenological change are two processes by which organisms respond to environmental warming. Understanding the mechanisms that drive these changes is key for optimal conservation and management. Here we study both processes in the migratory Bewick's swan (Cygnus columbianus bewickii) using different methods, analysing nearly 50 years of resighting data (1970–2017). In this period the wintering area of the Bewick's swans shifted eastwards (‘short‐stopping’) at a rate of ~13 km… 
Apparent breeding success drives long‐term population dynamics of a migratory swan
A transient life‐table response experiment showed that apparent breeding success and adult survival contributed most to the variation in population trend, and a significant association between juvenile survival both with the water level in lakes during autumn migration, which affects food accessibility for the swans, and with summer temperatures.
Chains as strong as the weakest link: remote assessment of aquatic resource use on spring migration by Bewick’s Swans
Migratory species are threatened worldwide by climate change, overexploitation, and habitat changes. Availability of suitable habitat is important for flying migrants, and in particular for large
Behavioural and energetic consequences of competition among three overwintering swan (Cygnus spp.) species
Background Winter numbers of the northwest European population of Bewick’s Swans ( Cygnus columbianus bewickii ) declined recently by c. 40%. During the same period, numbers of two sympatric and
Migratory vertebrates shift migration timing and distributions in a warming Arctic
Abstract Climate warming in the Arctic has led to warmer and earlier springs, and as a result, many food resources for migratory animals become available earlier in the season, as well as become
Nocturnal foraging lifts time constraints in winter for migratory geese but hardly speeds up fueling
  • T. K. LamerisA. Dokter B. Nolet
  • Environmental Science
    Behavioral ecology : official journal of the International Society for Behavioral Ecology
  • 2021
It is shown that, during winter, when facing higher thermoregulation costs, geese consistently foraged at night, especially during moonlit nights, in order to balance their energy budgets, and may have some leeway to advance and increase fueling rate, potentially reaching departure body mass 4 days earlier.
Extrinsic factors, endocrine mechanisms, and behavioral indicators of migratory restlessness in wintering whooper swans (Cygnus cygnus)
Findings confirmed findings of previous studies on migratory restlessness in whooper swans, but due to the small sample size the effect of PC3 on home range size was weak and should be viewed with caution.
Bird ringing and nest recording in Britain and Ireland in 2020
ABSTRACT This is the 84th annual report of the British Trust for Ornithology’s Ringing Scheme, incorporating the report of the Nest Record Scheme and covering work carried out and data processed in


Mechanisms driving phenological and range change in migratory species
Using a long-term study of a migratory shorebird in which individuals have been tracked through a period of range expansion and phenological change, it is shown that these changes occur through generational shifts in spatial and phenology distributions, and that individuals are highly consistent in space and time.
Climate change leads to differential shifts in the timing of annual cycle stages in a migratory bird
The results suggest that the advancement of breeding allows more time for fledgling development, increasing their probability to recruit and may incur costs to other parts of the annual cycle, but, despite the shorter intervals, there was no effect on adult survival.
Avian migration phenology and global climate change
  • P. A. Cotton
  • Environmental Science
    Proceedings of the National Academy of Sciences of the United States of America
  • 2003
The timing of arrival has advanced in relation to increasing winter temperatures in sub-Saharan Africa, whereas the timing of departure has advanced after elevated summer temperatures in Oxfordshire, demonstrating that migratory phenology is quite likely to be affected by global climate change.
Northward range expansion in spring‐staging barnacle geese is a response to climate change and population growth, mediated by individual experience
It is suggested that barnacle geese integrate socially learned behaviour with adjustments to individual experiences, allowing the population to respond rapidly and accurately to global change.
Apparent survival of an Arctic-breeding migratory bird over 44 years of fluctuating population size
Weather conditions in different areas across the flyway, food resources on the winter grounds, density-dependence and the growth of numbers at a relatively new wintering site (the Evros Delta in Greece) all performed poorly as explanatory variables of apparent survival.
Temperature‐related increases in grass growth and greater competition for food drive earlier migrational departure of wintering Whooper Swans
The results suggested that departure is mediated by the influence of spring temperature on food resources, with increased February grass growth in warmer years enabling earlier departure of migrating Swans.
Highly dynamic wintering strategies in migratory geese: Coping with environmental change
It is demonstrated that individual winter strategies of pink‐footed geese are very flexible and able to change over time, suggesting that phenotypic plasticity and cultural transmission are important drivers of strategy choice in this species.
Climate change causes rapid changes in the distribution and site abundance of birds in winter
Detecting coherent signals of climate change is best achieved by conducting expansive, long‐term studies. Here, using counts of waders (Charadrii) collected from ca. 3500 sites over 30 years and
Climate change and timing of avian breeding and migration: evolutionary versus plastic changes
The literature is reviewed to disentangle the actions of evolutionary changes in response to selection induced by climate change versus changes due to individual plasticity, that is, the capacity of an individual to adjust its phenology to environmental variables, within the abundant literature on climate change effects on bird phenology.
Rapid climate driven shifts in wintering distributions of three common waterbird species
Strong north-eastwards shifts in the centres of gravity of the entire wintering range of three common waterbird species along the North-West Europe flyway during the past three decades are demonstrated.