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Seasonal nomadism and pre-breeding scouting forays of a Spotted Sandgrouse (Pterocles senegallus)/Nomadismo estacional y movimientos prerreproductivos de exploration de una ganga Pterocles senegalhts

Authors :
Gut, Elon
Sapir, Nir
Hatzofe, Ohad
Ovadia, Ofer
Source :
The Wilson Journal of Ornithology. December, 2020, Vol. 132 Issue 4, p1014, 7 p.
Publication Year :
2020

Abstract

Nomadism is a type of movement lacking fixed spatiotemporal patterns, evident in species inhabiting variable environments. The irregular movement characterizing nomadic species often acts as a challenging barrier for scientists investigating their ecology. We provide an insight on the movement of a nomadic desert bird, the Spotted Sandgrouse (Pterocles senegallus), within and between different activity seasons. The data were obtained from I individual fitted with a satellite transmitter, which was tracked for -2.5 years. Three main activity seasons were detected during which the bird stayed in a specific area: prebreeding, breeding, and winter. Nomadic behavior was evident during the pre-breeding and breeding seasons, whereas site fidelity was observed during winter (i.e., seasonal nomadism). Local scale fidelity with respect to roosting behavior was also evident among and within the 3 winters of tracking. Field observations carried out during the first breeding season enabled us to link the movement patterns of the bird with its behavior at different phases of the breeding season. Within and between activity seasons. the bird was engaged in short- and long-distance scouting forays. The long-distance ones occurred only during the prebreeding season. In some of the scouting forays, the bird arrived at sites it had previously utilized, suggesting the existence of spatial memory and navigation capability. This fine-scale description of movement can uncover key features, which allow the survival and reproduction of nomadic birds inhabiting arid areas where the distribution of resources is largely unpredictable. Received 6 October 2019. Accepted 23 February 2021. Key words: Argos satellite tracking, irregular movement, roosting site, seasonal dynamics. El nomadismo es un tipo de movimiento que carcee de patrones espaciotemporales fijos. evidente en ambientes variables. Los movimientos irregulares que caracterizan a las especies nomadas frecuentemente actuan como un reto dificil de franquear para los cientifieos que investigan su ecologia. Aqui proveemos una mirada a los movimientos intra- e inter-estacionales de una especie nomada del desierto. la ganga Pterocles senegalhts. Los datos fueron obtcnidos de I individuo a quien se le coloco un transmisor de satelite y el cual fue seguido por -2.5 afios. Detectamos 3 temporadas principales de actividad. durante las cuales esta ave estuvo en un area especifica: prerreproductiva, reproductiva e invierno. El comportamicnto nomada fue evidente durante las temporadas prerreproductiva y reproductiva, mientras que su fidelidad a sitio fue obscrvada durante e! inviemo (i.e., nomadismo estacional). La fidelidad a escala local, en lo que respecta al comportamiento de dormideros. tambien fue evidente intra- e interestacionalmente en los 3 inviernos de este seguimiento. Las observaciones de campo que se Uevaron a cabo durante la primera estacion reproductiva nos permitieron vincular los patrones de movimiento de esta ave con su comportamiento en diferentes fases de dicha temporada. Intra- e inter-estacionalmente, esta ave se dedico a movimientos cxploratorios de cortas y largas distancias. Aquellos de largas distancias tuvieron lugar unicamente durante la temporada prerreproductiva. En algunas de sus exploraciones. esta ave llego a sitios que previamente habia utilizado. los cual sugiere la existencia de capacidades de memoria espacial y navegacion. Esta descripcion de movimientos puede develar caracteristicas clave que permiten la sobrevivencia y reproduccion de aves nomadas que habitan areas aridas dondc la distribucion de recursos es en su mayoria impredecible. Palabras clave: dinamica estacional, dormideros, movimientos irregulares. seguimiento satelital Argos.<br />Large-scale movements performed by birds could be divided into 2 major categories, regular and irregular movement (Cottee-Jones et al. 2016). Regular movement involves fixed spatial and temporal components (e.g., seasonal [...]

Details

Language :
English
ISSN :
15594491
Volume :
132
Issue :
4
Database :
Gale General OneFile
Journal :
The Wilson Journal of Ornithology
Publication Type :
Academic Journal
Accession number :
edsgcl.678464856