New insight into the feeding habits of these mammals will help conservation attempts.
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Nocturnal playback experiments: The response of two European species of birds to singing of foreign male at night.
PLoS One
November 2024
Department of Behavioural Ecology, Adam Mickiewicz University in Poznań, Poznań, Poland.
Recent studies have shown that nocturnal singing in diurnal birds is a common phenomenon, however, the understanding of the mechanisms, functions and consequences of this behaviour has been lacking. We focused on the night singing of two diurnal songbirds-the yellowhammer and the common chaffinch that are widely distributed in Europe. We conducted day and night playback experiments, during which we broadcast songs of an unfamiliar male to the territory holder at two different stages of the breeding season, to examine whether the night singing in species which normally do not sing at night elicits responses from their conspecifics.
View Article and Find Full Text PDFIndividual consistency of hissing displays across night and day in a free-living female songbird.
Behav Processes
October 2024
Department of Biology, Behavioural Ecology and Ecophysiology Group, University of Antwerp, Belgium.
Birds have evolved a variety of antipredator strategies, which have been extensively studied during day-time. Yet, how diurnal birds directly respond to nocturnal predation threats remains largely elusive, despite that predation risk can be high during both night- and day-time. One form of antipredator behaviour found in several tit species when confronted with a predator at the nest is the hissing display.
View Article and Find Full Text PDFNatural soundscapes of lowland river habitats and the potential threat of urban noise pollution to migratory fish.
Environ Pollut
October 2024
Institute of Biology Leiden, Leiden University, Sylviusweg 72, 2333, BE, Leiden, the Netherlands.
Migratory fish populations have experienced great declines, and considerable effort have been put into reducing stressors, such as chemical pollution and physical barriers. However, the importance of natural sounds as an information source and potential problems caused by noise pollution remain largely unexplored. The spatial distribution of sound sources and variation in propagation characteristics could provide migratory fish with acoustic cues about habitat suitability, predator presence, food availability and conspecific presence.
View Article and Find Full Text PDFInsect communities under skyglow: diffuse night-time illuminance induces spatio-temporal shifts in movement and predation.
Philos Trans R Soc Lond B Biol Sci
December 2023
German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103 Leipzig, Germany.
Artificial light at night (ALAN) is predicted to have far-reaching consequences for natural ecosystems given its influence on organismal physiology and behaviour, species interactions and community composition. Movement and predation are fundamental ecological processes that are of critical importance to ecosystem functioning. The natural movements and foraging behaviours of nocturnal invertebrates may be particularly sensitive to the presence of ALAN.
View Article and Find Full Text PDFNocturnal selective pressures on the evolution of human musicality as a missing piece of the adaptationist puzzle.
Front Psychol
October 2023
Department of Experimental Psychology, Institute of Psychology, University of São Paulo, São Paulo, Brazil.
Human musicality exhibits the necessary hallmarks for biological adaptations. Evolutionary explanations focus on recurrent adaptive problems that human musicality possibly solved in ancestral environments, such as mate selection and competition, social bonding/cohesion and social grooming, perceptual and motor skill development, conflict reduction, safe time-passing, transgenerational communication, mood regulation and synchronization, and credible signaling of coalition and territorial/predator defense. Although not mutually exclusive, these different hypotheses are still not conceptually integrated nor clearly derived from independent principles.
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