Unexpected diversity in socially synchronized rhythms of shorebirds

@article{Bulla2016UnexpectedDI,
  title={Unexpected diversity in socially synchronized rhythms of shorebirds},
  author={Martin Bulla and Mihai Valcu and Adriaan M. Dokter and Alexei Dondua and Andr{\'a}s Kosztol{\'a}nyi and Anne L. Rutten and Barbara Helm and Brett K. Sandercock and Bruce R. Casler and Bruno J. Ens and Caleb S. Spiegel and Chris J. Hassell and Clemens K{\"u}pper and Clive D. T. Minton and Daniel Burgas and David B. Lank and David C. Payer and Egor Y. Loktinov and Erica Nol and Eunbi Kwon and Fletcher Smith and H. River Gates and Hana Vitnerov{\'a} and Hanna Pr{\"u}ter and James A. Johnson and James J. H. St Clair and Jean‐François Lamarre and Jennie Rausch and Jeroen Reneerkens and Jesse R Conklin and Joana Burger and Joseph R. Liebezeit and Jo{\"e}l B{\^e}ty and Jon T. Coleman and Jordi Figuerola and Jos C.E.W. Hooijmeijer and Jos{\'e} A. Alves and Joseph A. M. Smith and Karel Weidinger and Kari Koivula and Ken Gosbell and Klaus‐Michael Exo and Larry Niles and Laura Koloski and Laura Mckinnon and Libor Praus and Marcel Klaassen and Marie-Andr{\'e}e Giroux and Martin Sl{\'a}de{\vc}ek and Megan L. Boldenow and Michael I. Goldstein and Miroslav E {\vS}{\'a}lek and Nathan R. Senner and Nelli R{\"o}nk{\"a} and Nicolas Lecomte and Olivier Gilg and Orsolya Vincze and Oscar Johnson and Paul A. Smith and Paul F Woodard and Pavel S Tomkovich and Phil F. Battley and Rebecca L. Bentzen and Richard B. Lanctot and Ronald R. Porter and Sarah T. Saalfeld and Scott Freeman and Stephen Brown and Stephen M. Yezerinac and Tam{\'a}s Sz{\'e}kely and Tom{\'a}s Montalvo and Theunis Piersma and Vanessa Loverti and Veli‐Matti Pakanen and Wim Tijsen and Bart Kempenaers},
  journal={Nature},
  year={2016},
  volume={540},
  pages={109-113}
}
The behavioural rhythms of organisms are thought to be under strong selection, influenced by the rhythmicity of the environment. Such behavioural rhythms are well studied in isolated individuals under laboratory conditions, but free-living individuals have to temporally synchronize their activities with those of others, including potential mates, competitors, prey and predators. Individuals can temporally segregate their daily activities (for example, prey avoiding predators, subordinates… 

Behavioural rhythms and parental cooperation in biparentally incubating shorebirds

  • M. Bulla
  • Biology, Environmental Science
  • 2017
TLDR
B biparental care – a complex social behaviour and a particularly sensitive phase of social synchronization – in which pair members potentially compromise their individual rhythms is addressed, and results suggest that parents communicate only during their brief exchange on the nest.

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TLDR
Substantial between nest differences in Lapwing male nest attendance are confirmed, how such differences relates to variation in incubation rhythms are revealed, and strong circadian incubation rhythm modulated by sunrise and sunset is described.

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Findings reveal remarkable sensitivity to social time-giving cues and show that bees with attenuated rhythms (weak oscillators) can nevertheless be socially synchronized to a common phase of activity.

Diverse incubation rhythms in a facultatively uniparental shorebird – the Northern Lapwing

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Strong circadian rhythms and remarkable between nest differences in Northern Lapwing incubation (especially in male involvement) are revealed, yet despite seasonal environmental trends (e.g. increasing temperature) LapWing incubation rhythms remained relatively stable over the season and incubation period.

Daily Rhythms of Female Self-maintenance Correlate with Predation Risk and Male Nest Attendance in a Biparental Wader

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Flexible parental care: Uniparental incubation in biparentally incubating shorebirds

TLDR
It is demonstrated that after the disappearance of one parent, individuals from 8 out of 15 biparentally incubating shorebird species were able to incubate uniparentally for 1–19 days (median = 3, N’s = 69), which reveals the potential for a flexible switch from biparental to unIParental care.
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