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Kaspar Delhey

Kaspar Delhey

D-Index & Metrics

Animal Science and Veterinary

D-Index
36
Citations
4697
World Ranking
1613
National Ranking
53

Ecology and Evolution

D-Index
37
Citations
4858
World Ranking
6927
National Ranking
361

Overview

Kaspar Delhey is affiliated with the Max Planck Society in Germany. Their research primarily spans the fields of Agricultural and Biological Sciences and Environmental Science, with notable focus on Ecology, Evolution, Behavior and Systematics.

Their main research topics include Animal Behavior and Reproduction, Plant and animal studies, Avian ecology and behavior, Species Distribution and Climate Change, Wildlife Ecology and Conservation, Amphibian and Reptile Biology, and Primate Behavior and Ecology.

Kaspar Delhey has contributed to several recent scientific publications, including:

  • Cooperative breeding and the emergence of multilevel societies in birds, 2022, Ecology Letters
  • Ornaments are equally informative in male and female birds, 2022, Nature Communications
  • Evolutionary predictors of the specific colors of birds, 2023, Proceedings of the National Academy of Sciences
  • Is color data from citizen science photographs reliable for biodiversity research?, 2021, Ecology and Evolution
  • Hot and dry conditions predict shorter nestling telomeres in an endangered songbird: Implications for population persistence, 2022, Proceedings of the National Academy of Sciences

The scientist frequently publishes in the following venues:

  • Behavioral Ecology
  • Ecology Letters
  • Proceedings of the National Academy of Sciences
  • Journal of Animal Ecology
  • Journal of Evolutionary Biology

Kaspar Delhey often collaborates with fellow researchers including Mihai Vâlcu, Bart Kempenaers, Anne Peters, James Dale, and Alexandra McQueen. These collaborations reflect overlapping interests in behavioral and ecological studies within their field.

Best Publications

  • Females increase offspring heterozygosity and fitness through extra-pair matings

    Katharina Foerster;Kaspar Delhey;Arild Johnsen;Jan T. Lifjeld

  • The effects of life history and sexual selection on male and female plumage colouration

    James Dale;Cody J. Dey;Kaspar Delhey;Bart Kempenaers

  • Carotenoid‐based bill colour as an indicator of immunocompetence and sperm performance in male mallards

    Anne Peters;Angelika Denk;Kaspar Delhey;Bart Kempenaers

  • Plumage colour in nestling blue tits: sexual dichromatism, condition dependence and genetic effects

    Arild Johnsen;Kaspar Delhey;Staffan Andersson;Bart Kempenaers

  • Paternity analysis reveals opposing selection pressures on crown coloration in the blue tit (Parus caeruleus)

    Kaspar Delhey;Arild Johnsen;Anne Peters;Staffan Andersson

  • A review of Gloger's rule, an ecogeographical rule of colour: definitions, interpretations and evidence.

    Kaspar Delhey

  • Trade-offs between immune investment and sexual signaling in male mallards.

    Anne Peters;Kaspar Delhey;Angelika G. Denk;Bart Kempenaers

  • Seasonal changes in blue tit crown color: Do they signal individual quality?

    Kaspar Delhey;Anne Peters;Arild Johnsen;Bart Kempenaers

  • Male sexual attractiveness and parental effort in blue tits: A test of the differential allocation hypothesis

    Arild Johnsen;Kaspar Delhey;Emmi Schlicht;Anne Peters

  • Cosmetic coloration in birds : Occurrence, function, and evolution

    Kaspar Delhey;Anne Peters;Bart Kempenaers

  • Immunosenescence in wild animals: meta-analysis and outlook.

    Anne Peters;Kaspar Delhey;Shinichi Nakagawa;Anne E. Aulsebrook;Anne E. Aulsebrook

  • The Effect of Migratory Shorebirds on the Benthic Species of Three Southwestern Atlantic Argentinean Estuaries

    Florencia Botto;Oscar O. Iribarne;Mariano M. Martínez;Kaspar Delhey

  • The condition-dependent development of carotenoid-based and structural plumage in nestling blue tits: males and females differ

    Anne Peters;Kaspar Delhey;Arild Johnsen;Bart Kempenaers

  • Conservation status of the buff-breasted sandpiper: historic and contemporary distribution and abundance in south america

    Richard B. Lanctot;Daniel E. Blanco;Rafael A. Dias;Juan P. Isacch

  • Reconciling ecogeographical rules: rainfall and temperature predict global colour variation in the largest bird radiation

    Kaspar Delhey;James Dale;Mihai Valcu;Bart Kempenaers

  • Condition‐dependence of multiple carotenoid‐based plumage traits: an experimental study

    Anne Peters;Kaspar Delhey;Staffan Andersson;Hendrika J. van Noordwijk

  • Darker where cold and wet: Australian birds follow their own version of Gloger's rule

    Kaspar Delhey

  • Age differences in blue tit Parus caeruleus plumage colour: within-individual changes or colour-biased survival?

    Kaspar Delhey;Bart Kempenaers

  • Conservation implications of anthropogenic impacts on visual communication and camouflage.

    Kaspar Delhey;Anne Peters

  • Seasonal Changes in Colour: A Comparison of Structural, Melanin- and Carotenoid-Based Plumage Colours

    Kaspar Delhey;Claudia Burger;Wolfgang Fiedler;Anne Peters

  • Fertilization success and UV ornamentation in blue tits Cyanistes caeruleus: correlational and experimental evidence

    Kaspar Delhey;Anne Peters;Arild Johnsen;Bart Kempenaers

  • Gloger’s rule

    Kaspar Delhey

  • Quantifying Variability of Avian Colours: Are Signalling Traits More Variable?

    Kaspar Delhey;Anne Peters

Frequent Co-Authors

Anne Peters
Anne Peters Monash University
Bart Kempenaers
Bart Kempenaers Max Planck Institute for Ornithology
Michelle L. Hall
Michelle L. Hall University of Melbourne
Mihai Valcu
Mihai Valcu Max Planck Society
Arild Johnsen
Arild Johnsen University of Oslo
Staffan Andersson
Staffan Andersson University of Gothenburg
Oscar Iribarne
Oscar Iribarne National University of Mar del Plata
Knud A. Jønsson
Knud A. Jønsson Swedish Museum of Natural History
Anne Peters
Anne Peters Max Planck Institute for Comparative Public Law and International Law
Naomi E. Langmore
Naomi E. Langmore Australian National University

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Related Online Degrees & Career Pathways

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For advanced professional practice, students may consider online psyd programs accredited by apa. These doctoral-level degrees emphasize clinical psychology skills that complement therapeutic work involving animals, fostering holistic health approaches.

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