15 Works

Data from: T1R2-mediated sweet sensing in a lizard

Qiaoyi Liang, Meng-Ching Ko, Nathaniel Ng, Borja Reh, Jessica Lee, Atsuko Yamashita, Hidenori Nishihara, Yasuka Toda & Maude Baldwin
Sugars are an important class of nutrients found in the flowers and fruits of angiosperms (flowering plants). Although T1R2-T1R3 has been identified as the mammalian sweet receptor, some birds rely on a repurposed T1R1-T1R3 savory receptor to sense sugars. Moreover, as the radiation of flowering plants occurred later than the last common ancestor of amniotes, sugar may not have been an important diet item for amniotes early in evolution, raising the question of whether T1R2-T1R3...

The broken-wing display across birds and the conditions for its evolution

Clinton Francis, Léna De Framond & Henrik Brumm
The broken-wing display is a well-known and conspicuous deceptive signal used to protect birds’ broods against diurnal terrestrial predators. Although commonly associated with shorebirds, it remains unknown how common the behaviour is across birds and what forces are associated with the evolution of the display. Here, we use the broken-wing display as a paradigmatic example to study the evolution of a behaviour across Aves. We show that the display is widespread: it has been described...

Data from: Evidence of low within-pair genetic relatedness in a relict population of Thorn-tailed Rayadito despite long-term isolation

Esteban Botero-Delgadillo, Verónica Quirici, Silvina Ippi, Rodrigo Vásquez & Bart Kempenaers
Investigating whether mating patterns are biased in relation to kinship in isolated populations can provide a better understanding of the occurrence of inbreeding avoidance mechanisms in wild populations. Here we report on the genetic relatedness (r) among breeding pairs in a relict population of Thorn-tailed Rayadito (Aphrastura spinicauda) in north-central Chile that has experienced a long-term history of isolation. We used simulations based on eight years of data to assess whether mating is random with...

Brood parasitism risk drives birds to breed near humans

Jinggang Zhang, Peter Santema, Jianqiang Li, Wenhong Deng & Bart Kempenaers
Although humans have generally negative effects on wildlife, some animals live in close proximity to human residences. Why some animals choose to settle near humans remains a long-standing puzzle. Settling near humans or in urban environments may be beneficial, because of the availability of resources such as food (e.g. supplemental feeding) or suitable nest sites (e.g. cavities), or because of reduced predation risk if predators avoid settlements. Here, we report on a study of Daurian...

Data from: Synergism, bifunctionality, and the evolution of a gradual sensory trade-off in hummingbird taste receptors

Glenn Cockburn, Meng-Ching Ko, Keren Sadanandan, Eliot Miller, Tomoya Nakagita, Amanda Monte, Sungbo Cho, Eugeni Roura, Yasuka Toda & Maude Baldwin
Sensory receptor evolution can imply trade-offs between ligands, but the extent to which such trade-offs occur and the underlying processes shaping their evolution is not well understood. For example, hummingbirds have re-purposed their ancestral savory receptor (T1R1-T1R3) to detect sugars, but the impact of this sensory shift on amino acid perception is unclear. Here, we use functional and behavioral approaches to show that the hummingbird T1R1-T1R3 acts as a bifunctional receptor responsive to both sugars...

Breeding site fidelity is lower in polygamous shorebirds and male-biased in monogamous species

Eunbi Kwon, Mihai Valcu, Margherita Cragnolini, Martin Bulla, Bruce Lyon & Bart Kempenaers
Sex-bias in breeding dispersal is considered the norm in many taxa, and the magnitude and direction of such sex-bias is expected to correlate with the social mating system. We used local return rates in shorebirds as an index of breeding site fidelity, and hence as an estimate of the propensity for breeding dispersal, and tested whether variation in site fidelity and in sex-bias in site fidelity relates to the mating system. Among 111 populations of...

Data from: A single residue confers selective loss of sugar sensing in wrynecks

Julia Cramer, Eliot Miller, Meng-Ching Ko, Qiaoyi Liang, Glenn Cockburn, Tomoya Nakagita, Massimiliano Cardinale, Leonida Fusani, Yasuka Toda & Maude Baldwin
Sensory receptors evolve, and changes to their response profiles can directly impact sensory perception and affect diverse behaviors, from mate choice to foraging decisions. Although receptor sensitivities can be highly contingent on changes occurring early in a lineage’s evolutionary history, subsequent shifts in a species’ behavior and ecology may exert selective pressure to modify and even reverse sensory receptor capabilities. Neither the extent to which sensory reversion occurs, nor the mechanisms underlying such shifts is...

Data from: Which plumage patches provide information about condition and success in a female fairy-wren?

Sergio Nolazco, Kaspar Delhey, Marie Fan, Michelle L. Hall, Sjouke A. Kingma, Michael J. Roast, Teunissen Niki & Anne Peters
Recent evidence suggests that female ornaments can commonly act as signals. However, how signaling functions might be affected by the tendency for reduced ornament elaboration in relation to males is less well understood. We address this in mutually ornamented purple-crowned fairy-wrens. We investigated putatively ornamental (tail, ear coverts, crown) and non-ornamental (throat, back) plumage patches in females and compared our findings to previous studies in males. Both sexes have brown backs, buff-white throats, and turquoise-blue...

Differences in on-ground and aloft conditions explain seasonally different migration paths in Demoiselle crane

Batbayar Galtbalt, Nyambayar Batbayar, Tuvshintugs Sukhbaatar, Bernd Vorneweg, Georg Heine, Uschi Müller, Martin Wikelski & Marcel Klaassen
Background: Although some migratory birds may take different routes during their outbound and inbound migration, the factors causing these differential migrations to and from the breeding grounds, have rarely been investigated. In Northeast Asia, Demoiselle crane (Anthropoides virgo) performs one of the most extreme “loop” migrations known to date. During outbound migration, they cross the Himalayas to non-breeding sites in northwest India. Contrastingly, during inbound migration to the breeding grounds, they fly around the western...

Ecological inference using data from accelerometers needs careful protocols

Baptiste Garde, Rory Wilson, Adam Fell, Nik Cole, Vikash Tatayah, Mark Holton, Kayleigh Rose, Richard Metcalfe, Hermina Robotka, Martin Wikelski, Fred Tremblay, Shannon Whelan, Kyle Elliott & Emily Shepard
1. Accelerometers in animal-attached tags have proven to be powerful tools in behavioural ecology, being used to determine behaviour and provide proxies for movement-based energy expenditure. Researchers are collecting and archiving data across systems, seasons and device types. However, in order to use data repositories to draw ecological inference, we need to establish the error introduced according to sensor type and position on the study animal and establish protocols for error assessment and minimization. 2....

Female extra-pair behavior is not associated with reduced paternal care in Thorn-tailed Rayadito

Yanina Poblete, Esteban Botero-Delgadillo, Pamela Espíndola-Hernández, Gabriela Südel & Rodrigo Vasquez
Extra-pair behavior is present in 76% of socially monogamous bird species with biparental care. This behavior may produce costs to females related to a reduction in paternal care. We estimated the percentage of extra-pair offspring and quantified paternal care in 44 nests of Thorn-tailed Rayadito (Aphrastura spinicauda) to assess whether males reduce their parental care when females obtain extra-pair fertilizations. We used data from a sub-Antarctic population of Rayadito located on Navarino Island (55°4′S, 67°40′W),...

The mere presence of cuckoos in breeding area alters egg-ejection decisions in Daurian redstarts

Jinggang Zhang, Peter Santema, Jianqiang Li, William Feeney, Wenhong Deng & Bart Kempenaers
Brood parasitic cuckoos and their hosts serve as model systems for studying host-parasite coevolution. Egg-rejection behavior constitutes an effective defense against brood parasitism, but some host species show phenotypic plasticity in egg-rejection behavior. Direct exposure to a cuckoo near the nest can increase egg-rejection likelihood, and long-term studies have shown that increased the egg-rejection rates generally correlate with higher parasite prevalence. However, it remains unclear whether such increases result from interactions between parasites and hosts,...

Experimental evidence that cuckoos choose host nests following an egg matching strategy

Jinggang Zhang, Peter Santema, Zixuan Lin, Lixing Yang, Meijun Liu, Jianqiang Li, Wenhong Deng & Bart Kempenaers
The arms race between brood parasites and their hosts provides a classic model to study coevolution. Hosts often learn to recognize and remove the parasitic egg from their clutch. To avoid egg rejection, brood parasites should select host nests in which the colour of the eggs best matches that of their own. Although this hypothesis has received some support, direct experimental evidence is still lacking. Here, we report on a study of Daurian redstarts (Phoenicurus...

Data for: Patterns of extra-territorial nestbox visits in a songbird suggest a role in extra-pair mating

Peter Santema & Bart Kempenaers
Many animals make visits outside of their territory during the breeding period, but these are typically infrequent and difficult to observe. As a consequence, comprehensive data on extra-territorial movements at the population-level are scarce and the function of this behavior remains poorly understood. Using an automated nestbox visit tracking system in a wild blue tit population over six breeding seasons, we recorded all extra-territorial nestbox visits (n=22137) related to 1195 individual breeding attempts (761 unique...

Registration Year

  • 2022

Resource Types

  • Dataset


  • Max Planck Institute for Ornithology
  • Beijing Normal University
  • Meiji University
  • Beijing Forestry University
  • University of Chile
  • California Polytechnic State University
  • University of Queensland
  • Tokyo Institute of Technology
  • McGill University
  • Andrés Bello University