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© Joseph Naccarato 2016

Publications

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Satellite transmitters reveal previously unknown migratory behavior and wintering locations of Yuma Ridgway’s Rails

Abstract Preventing or reversing population declines of rare species often requires an understanding of their complete annual life cycle, but this information is lacking for many species. Such has been the case for Yuma Ridgway’s Rails (Rallus obsoletus yumanensis), a federally endangered marsh bird endemic to the Lower Colorado River…

Earlier and slower or later and faster: Spring migration pace linked to departure time in a Neotropical migrant songbird

Abstract 1. Migratory birds travel vast distances and the timing of migratory flights can affect survival and the ability to reproduce. For Neotropical migrant songbirds, early spring departure from wintering sites, early arrival to the breeding grounds and higher reproductive success have been related to the use of suitable habitats…

Wolves without borders: Transboundary survival of wolves in Banff National Park over three decades

Abstract Large carnivores are important ecological drivers of ecosystem dynamics when they occur at ecologically effective densities. They are also challenging to conserve, especially in transboundary settings such as along borders of national parks. Here, we tested for effects of transboundary movements on survival of 72 radiocollared gray wolves from…

Hidden Long-Distance Movements by a Migratory Bird

Abstract Technology has revolutionized our ability to track animals across the globe, significantly advancing our understanding of animal movement. Technological and logistical challenges, however, have led to non-migratory movements that fall outside of the territory/home range paradigm, receiving less attention. This may have resulted in a widespread underestimation of the…

Looking at the forest through the eyes of birds: A radio-tracking study of microhabitat use in provisioning great tits.

Abstract Detailed knowledge of habitat utilization by animals is integral in understanding their ability to adjust resource exploitation to the conditions of heterogeneous and constantly changing habitats. To identify the most important micro- and macrohabitat landscape characteristics that are important factors for birds when choosing foraging patches in their territory,…

Breeding status influences timing but not duration of moult in the Northern Fulmar Fulmarus glacialis.

Abstract Seabirds are key marine top predator species that are often used as indicators of the environmental quality of the oceans. Their breeding phenology has been studied extensively, but their pelagic habits mean less is known about the phenology of other events during the non-breeding period. Here, we used miniaturized…

Bitter fruits of hard labour: diet metabarcoding and telemetry reveal that urban songbirds travel further for lower-quality food.

Abstract Rapidly increasing urbanisation requires mitigation against associated losses of biodiversity and species abundance. In urban-breeding birds, altered food availability for nestlings is thought to reduce reproductive success compared to forest populations. To compensate for shortages of preferred foods, urban parents could increase their search effort for optimal diets or…