Kaspar Delhey

4.5k total citations · 1 hit paper
94 papers, 3.3k citations indexed

About

Kaspar Delhey is a scholar working on Ecology, Evolution, Behavior and Systematics, Ecology and Global and Planetary Change. According to data from OpenAlex, Kaspar Delhey has authored 94 papers receiving a total of 3.3k indexed citations (citations by other indexed papers that have themselves been cited), including 77 papers in Ecology, Evolution, Behavior and Systematics, 58 papers in Ecology and 14 papers in Global and Planetary Change. Recurrent topics in Kaspar Delhey's work include Animal Behavior and Reproduction (72 papers), Plant and animal studies (55 papers) and Avian ecology and behavior (46 papers). Kaspar Delhey is often cited by papers focused on Animal Behavior and Reproduction (72 papers), Plant and animal studies (55 papers) and Avian ecology and behavior (46 papers). Kaspar Delhey collaborates with scholars based in Germany, Australia and Argentina. Kaspar Delhey's co-authors include Bart Kempenaers, Anne Peters, Arild Johnsen, Jan T. Lifjeld, Katharina Foerster, Mihai Vâlcu, Staffan Andersson, James Dale, Angelika G. Denk and Cody J. Dey and has published in prestigious journals such as Nature, Proceedings of the National Academy of Sciences and Nature Communications.

In The Last Decade

Kaspar Delhey

92 papers receiving 3.2k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

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

2015 270 citations James Dale, Kaspar Delhey et al. Nature profile →

Peers

Kaspar Delhey

EEBS

ECOLO

GENET

GPC

PARAS

Sarah R. Pryke Australia

Stephan J. Schoech United States

Claire Doutrelant France

Bruce E. Lyon United States

Patrick S. Fitze Spain

Claire N. Spottiswoode United Kingdom

James Dale New Zealand

János Török Hungary

Rodrigo A. Vásquez Chile

Arild Johnsen Norway

Sarah R. Pryke Australia

Kaspar Delhey

2.2k ×0.8

EEBS

1.2k ×0.7

ECOLO

536 ×1.1

GENET

522 ×1.1

GPC

105 ×0.4

PARAS

Citations per year, relative to Kaspar Delhey Kaspar Delhey (= 1×) peers Sarah R. Pryke

Countries citing papers authored by Kaspar Delhey

Since Specialization

Citations

This map shows the geographic impact of Kaspar Delhey's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Kaspar Delhey with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Kaspar Delhey more than expected).

Fields of papers citing papers by Kaspar Delhey

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Kaspar Delhey. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Kaspar Delhey. The network helps show where Kaspar Delhey may publish in the future.

Co-authorship network of co-authors of Kaspar Delhey

This figure shows the co-authorship network connecting the top 25 collaborators of Kaspar Delhey. A scholar is included among the top collaborators of Kaspar Delhey based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Kaspar Delhey. Kaspar Delhey is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

1.

Ibáñez‐Álamo, Juan Diego, et al.. (2025). Colourful Urban Birds: Bird Species Successful in Urban Environments Have More Elaborate Colours and Less Brown. Ecology Letters. 28(4). e70106–e70106. 2 indexed citations

2.

Delhey, Kaspar, et al.. (2024). Variation in nuptial color in relation to sex, individual quality and mating success in the sex-role reversed Phalaropus fulicarius (Red Phalarope). The Auk. 141(3). 1 indexed citations

3.

Eastwood, Justin R., Andréaz Dupoué, Kaspar Delhey, et al.. (2023). When does early‐life telomere length predict survival? A case study and meta‐analysis. Molecular Ecology. 32(11). 3000–3013. 10 indexed citations

4.

Santangeli, Andrea, William K. Morris, Kaspar Delhey, et al.. (2023). What drives our aesthetic attraction to birds?. SHILAP Revista de lepidopterología. 2(1). 20–20. 20 indexed citations

5.

Delhey, Kaspar, James Dale, Mihai Vâlcu, & Bart Kempenaers. (2021). Migratory birds are lighter coloured. Current Biology. 31(23). R1511–R1512. 19 indexed citations

6.

Delhey, Kaspar, et al.. (2020). Body size and climate as predictors of plumage colouration and sexual dichromatism in parrots. Journal of Evolutionary Biology. 33(11). 1543–1557. 15 indexed citations

7.

Delhey, Kaspar, et al.. (2020). Physiological costs and age constraints of a sexual ornament: an experimental study in a wild bird. Behavioral Ecology. 32(2). 327–338. 9 indexed citations

8.

Delhey, Kaspar, et al.. (2020). Male fairy-wrens produce and maintain vibrant breeding colors irrespective of individual quality. Behavioral Ecology. 32(1). 178–187. 6 indexed citations

9.

Delhey, Kaspar, et al.. (2020). Partial or complete? The evolution of post‐juvenile moult strategies in passerine birds. Journal of Animal Ecology. 89(12). 2896–2908. 17 indexed citations

10.

Delhey, Kaspar. (2020). Behavioral ecology of neotropical birds. El Hornero. 35(1). 54–55. 3 indexed citations

11.

Peters, Anne, Kaspar Delhey, Shinichi Nakagawa, Anne E. Aulsebrook, & Simon Verhulst. (2019). Immunosenescence in wild animals: meta‐analysis and outlook. Ecology Letters. 22(10). 1709–1722. 64 indexed citations

12.

Teunissen, Niki, et al.. (2017). Bright birds are cautious: seasonally conspicuous plumage prompts risk avoidance by male superb fairy-wrens. Proceedings of the Royal Society B Biological Sciences. 284(1857). 20170446–20170446. 28 indexed citations

13.

Morales, Hernán E., Alexandra Pavlova, Paul Sunnucks, et al.. (2016). Neutral and selective drivers of colour evolution in a widespread Australian passerine. Journal of Biogeography. 44(3). 522–536. 17 indexed citations

14.

Delhey, Kaspar, Claudia Bürger, Wolfgang Fiedler, & Anne Peters. (2010). Seasonal Changes in Colour: A Comparison of Structural, Melanin- and Carotenoid-Based Plumage Colours. PLoS ONE. 5(7). e11582–e11582. 60 indexed citations

15.

Delhey, Kaspar, et al.. (2008). Observations on a nest of the Bearded Tachuri (Polystictus pectoralis). Ornitología Neotropical. 19(1). 157–160. 1 indexed citations

16.

Petracci, Pablo F., et al.. (2007). Hábitos granívoros en la Gaviota Cangrejera (<i>Larus atlanticus</i>): implicancias sobre su estatus de especialista. El Hornero. 22(1). 51–54. 6 indexed citations

17.

Pérez, Cristian Hernán Fulvio, Kaspar Delhey, & Pablo F. Petracci. (2006). Aves nuevas o poco frecuentes del norte de la Patagonia Argentina. Nuestras Aves. 25–29. 2 indexed citations

18.

Foerster, Katharina, Kaspar Delhey, Arild Johnsen, Jan T. Lifjeld, & Bart Kempenaers. (2003). Females increase offspring heterozygosity and fitness through extra-pair matings. Nature. 425(6959). 714–717. 428 indexed citations

19.

Lanctot, Richard B., Daniel Blanco, Rafael Antunes Dias, et al.. (2002). CONSERVATION STATUS OF THE BUFF-BREASTED SANDPIPER: HISTORIC AND CONTEMPORARY DISTRIBUTION AND ABUNDANCE IN SOUTH AMERICA. The Wilson Bulletin. 114(1). 44–72. 38 indexed citations

20.

Delhey, Kaspar, Pablo F. Petracci, & Cristian Hernán Fulvio Pérez. (2001). Observaciones de Charadriiformes en el sur de la provincia de Buenos Aires, Argentina. Nuestras Aves. 14–16. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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