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Documents disponibles écrits par cet auteur (15)
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Article
Rebecca R. Irons, Auteur ; Alan TK Lee, Auteur ; Robert L. Thomson, Auteur ; Birgit Erni, AuteurMoult is a vital but energy-demanding event in a bird’s phenological cycle. Primary moult is the shedding of old feathers and the regeneration of new flight feathers to maintain efficient functioning of these critical structures. Life history ev[...]
Article
Olufemi P. Olubodun, Auteur ; Anthony M. Lowney, Auteur ; Diana Bolopo, Auteur ; Robert L. Thomson, AuteurBirds of prey are apex predators and understanding their life history can serve as a valuable baseline for investigating their ecological role. Pygmy Falcons (Polihierax semitorquatus), Africa’s smallest diurnal raptor, have evolved to be obliga[...]
Article
Veli-Matti Pakanen, Auteur ; Donald Blomqvist, Auteur ; Torgrim Breiehagen, Auteur ; Lars-Åke Flodin, Auteur ; Olavi Hilden, Auteur ; David B. Lank, Auteur ; Mikael Larsson, Auteur ; Terje Lislevand, Auteur ; Kimmo Nuotio, Auteur ; Peter Olsson, Auteur ; Richard Ottvall, Auteur ; Angela Pauliny, Auteur ; Hannes Pehlak, Auteur ; Antti Ronka, Auteur ; Nelli Ronka, Auteur ; Douglas Schamel, Auteur ; Martti Soikkeli, Auteur ; Robert L. Thomson, Auteur ; Ole Thorup, Auteur ; Pavel Tomkovich, Auteur ; Diane Tracy, Auteur ; Kari Koivula, AuteurSupernormal clutches are found across bird species. Such clutches often result from more than one female laying eggs in the same nest and can reflect different behaviours from parasitism to laying mistakes. Enlarged clutches are readily visible [...]
Article
Christie A. Craig, Auteur ; Robert L. Thomson, Auteur ; Andrea Santangeli, AuteurEcosystem services are cited as one of the many reasons for conserving declining vulture populations in Africa. We aimed to explore how communal farmers in Namibia perceive vultures and the ecosystem services they provide, with special focus on [...]
Article
Jukka T. Forsman, Auteur ; Janne-Tuomas Seppanen, Auteur ; Mikko Monkkonen, Auteur ; Robert L. Thomson, Auteur ; Sami M. Kivela, Auteur ; Indriķis Krams, Auteur ; Olli J. Loukola, Auteur
Article
Martin Gilbert, Auteur ; Chea Sokha, Auteur ; Priscilla H. Joyner, Auteur ; Robert L. Thomson, Auteur ; Colin Poole, AuteurDemand for captive wild animals for the purposes of religious or 'merit' release has led to establishment of a large commercial trade in many parts of East and South Asia. The practice is associated with a number of risks to the integrity of wil[...]
Article
Robert L. Thomson, Auteur ; J. Willem H. Ferguson, AuteurWe examined temporal and spatial effects on (1) overall flock composition, and (2) aspects of the foraging behaviour of three bird species commonly participating in mixed-species flocks in mixed and Acacia woodland across the winter season in So[...]
Article
Robert L. Thomson, Auteur ; Jere Tolvanen, Auteur ; Jukka T. Forsman, AuteurBrood parasite - host systems continue to offer insights into species coevolution. A notable system is the redstart Phoenicurus phoenicurus parasitized by the 'redstart-cuckoo' Cuculus canorus gens. Redstarts are the only regular cuckoo hosts th[...]
Article
Jukka T. Forsman, Auteur ; Robert L. Thomson, Auteur
Article
Chiara Morosinotto, Auteur ; Robert L. Thomson, Auteur ; Erkki Korpimäki, AuteurP>1. Breeding territory choice constitutes a crucial antipredator behaviour for animals that determines reproductive success and survival during the breeding season. On arrival to breeding grounds migrant prey face a multitude of 'waiting' preda[...]
Article
Maternal transfer of androgens in eggs is affected by food supplementation but not by predation risk
Chiara Morosinotto, Auteur ; Robert L. Thomson, Auteur ; Suvi Ruuskanen, Auteur ; Erkki Korpimäki, Auteur ; Esa Lehikoinen, Auteur ; Erich Mostl, Auteur ; Toni Laaksonen, AuteurMothers may affect the future success of their offspring by varying allocation to eggs and embryos. Allocation may be adaptive based on the environmental conditions perceived during early breeding. We investigated the effects of food supplementa[...]
Article
Veli-Matti Pakanen, Auteur ; Nelli Ronka, Auteur ; Robert L. Thomson, Auteur ; Kari Koivula, AuteurSmall light-level geolocators have revolutionized research on avian migration and breeding ecology. However, proper evaluations of their impact on the life history of individuals compared to control individuals that experience the same condition[...]
Article
Chaminda Pradeep Ratnayake, Auteur ; Chiara Morosinotto, Auteur ; Suvi Ruuskanen, Auteur ; Alexandre Villers, Auteur ; Robert L. Thomson, AuteurPassive Integrated Transponder (PIT) tags have been widely used for ornithological research. However, only few studies have reported their impacts on individuals. We assessed the efficacy of subcutaneous PIT tag implantation in the mantel area o[...]
Article
Chiara Morosinotto, Auteur ; Suvi Ruuskanen, Auteur ; Robert L. Thomson, Auteur ; Heli Siitari, Auteur ; Erkki Korpimäki, Auteur ; Toni Laaksonen, AuteurPredation risk is an environmental stressor that can induce changes in prey behavior and physiology. Perception of predation risk may indirectly affect offspring traits and future fitness prospects via impacts on the condition of parents. Female[...]
