Foraging Far from Home: Gps-Tracking of Mediterranean Storm-Petrels Hydrobates pelagicus melitensis Reveals Long-Distance Foraging Movements

Ardeola ◽  
2020 ◽  
Vol 68 (1) ◽  
pp. 3
Author(s):  
Andreu Rotger ◽  
Alfonso Sola ◽  
Giacomo Tavecchia ◽  
Ana Sanz-Aguilar
Keyword(s):  
Gps Tracking ◽  
Long Distance ◽  
Foraging Movements

scholarly journals Foraging movements are density-independent among straw-coloured fruit bats

2020 ◽  
Vol 7 (5) ◽  
pp. 200274
Author(s):  
María C. Calderón-Capote ◽  
Dina K. N. Dechmann ◽  
Jakob Fahr ◽  
Martin Wikelski ◽  
Roland Kays ◽  
...  
Keyword(s):  
Intraspecific Competition ◽  
Colony Size ◽  
Resource Depletion ◽  
Central Place ◽  
Long Distance ◽  
Foraging Patterns ◽  
Fruit Bat ◽  
Foraging Movements ◽  
Productive Landscapes ◽  
Eidolon Helvum

Intraspecific competition in large aggregations of animals should generate density-dependent effects on foraging patterns. To test how large differences in colony size affect foraging movements, we tracked seasonal movements of the African straw-coloured fruit bat ( Eidolon helvum ) from four colonies that range from 4000 up to 10 million animals. Contrary to initial predictions, we found that mean distance flown per night (9–99 km), number of nightly foraging sites (2–3) and foraging and commuting times were largely independent of colony size. Bats showed classic central-place foraging and typically returned to the same day roost each night. However, roost switching was evident among individuals in three of the four colonies especially towards the onset of migration. The relatively consistent foraging patterns across seasons and colonies indicate that these bats seek out roosts close to highly productive landscapes. Once foraging effort starts to increase due to local resource depletion they migrate to landscapes with seasonally increasing resources. This minimizes high intraspecific competition and may help to explain why long-distance migration, otherwise rare in bats, evolved in this highly gregarious species.

scholarly journals An initial record of a long-distance dispersal route of a male sika deer in central Japan

Mammalia ◽  
2019 ◽  
Vol 84 (1) ◽  
pp. 63-68
Author(s):  
Akiko Takii ◽  
Shigeyuki Izumiyama ◽  
Takashi Mochizuki
Keyword(s):  
Global Positioning System ◽  
Sika Deer ◽  
Cervus Nippon ◽  
First Record ◽  
Gps Tracking ◽  
Long Distance ◽  
Central Japan ◽  
Seasonal Movement ◽  
Global Positioning ◽  
Dispersal Route

Abstract We conducted a global positioning system (GPS) tracking of a male sika deer (Cervus nippon) and his mother in the eastern foothills of the northern Japanese Alps, central Japan. Sika deer exhibited similar seasonal movement patterns; however, the male deer left his natal group at 11 months of age. At 15 months of age, the male deer settled in the neighboring mountain, which was 74 km away from his natal range. This is the first record of long-distance (>50 km) natal dispersal of the sika deer. Our findings might help to explain the expanding distribution of the sika deer.

scholarly journals GPS tracking reveals landfill closures induce higher foraging effort and habitat switching in gulls

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Liam P. Langley ◽  
Stuart Bearhop ◽  
Niall H.K. Burton ◽  
Alex N. Banks ◽  
Tim Frayling ◽  
...  
Keyword(s):  
Habitat Selection ◽  
Urban Areas ◽  
Movement Ecology ◽  
Habitat Choice ◽  
Gps Tracking ◽  
Behavioural Responses ◽  
Larus Fuscus ◽  
Before And After ◽  
Indirect Impacts ◽  
Foraging Movements

Abstract Background Landfills are a major subsidy for some animals, with implications for their life history and demography. Gulls feed extensively on food from landfills and closures are expected to have ecological consequences, but how this influences movement ecology is virtually unknown. Methods We used GPS-tracking to quantify foraging behaviour and habitat choice of lesser black-backed gulls (Larus fuscus) breeding at two colonies before and after closure of two nearby landfills. Results Following closure, gulls from both colonies travelled further and for longer to forage. Gulls also changed habitat selection, although this differed by colony - birds from one colony shifted to agricultural habitats, while at the other, increased their use of urban areas. These behavioural responses had no effect on adult body condition but hint at potential direct effects of higher foraging costs and indirect impacts by shifting to new habitats. Conclusions Our results demonstrate how landfill availability influences gull foraging movements and habitat selection. We also emphasize the value of biologging to detect rapid behavioural responses in contrast to more conventional demographic approaches, which is especially important for animals that spend the majority of their lives away from direct observation.

Explorative GPS-Tracking of Foraging Movements by Audouin's Gulls Reveals No Association with Fishing Vessels in Croatia

Ardea ◽  
2019 ◽  
Vol 107 (2) ◽  
pp. 213
Author(s):  
Luka Jurinović ◽  
Mate Zec ◽  
Vlatka Dumbović Mazal ◽  
Jelena Kralj
Keyword(s):  
Gps Tracking ◽  
Fishing Vessels ◽  
Foraging Movements

Annual GPS tracking reveals unexpected wintering area in a long-distance migratory songbird

2018 ◽  
Vol 160 (1) ◽  
pp. 265-270 ◽  
Author(s):  
Lykke Pedersen ◽  
Kasper Thorup ◽  
Anders P. Tøttrup
Keyword(s):  
Gps Tracking ◽  
Long Distance ◽  
Wintering Area ◽  
Migratory Songbird

Wildlife tracking technology options and cost considerations

2011 ◽  
Vol 38 (8) ◽  
pp. 653 ◽  
Author(s):  
Bindi Thomas ◽  
John D. Holland ◽  
Edward O. Minot
Keyword(s):  
Case Studies ◽  
Tracking System ◽  
Satellite Tracking ◽  
Gps Tracking ◽  
Technology Choice ◽  
Long Distance ◽  
Wildlife Tracking ◽  
Choice Decision ◽  
Project Objectives ◽  
Tracking Technology

Context Continued demand for long-distance remote wildlife tracking has resulted in the development of a variety of satellite tracking technologies. Choosing an appropriate satellite tracking system for a project involves financial, technical and operational tradeoffs associated with different systems. Aim The aim of the present research was to assess the technology options and associated costs to help wildlife researchers select the best tracking solution for their needs. Methods A technology-choice decision guide was developed to assist wildlife scientists select an optimal tracking technology. We undertook four satellite tracking case studies involving avian, aquatic and terrestrial species living in diverse environments around the world and use these case studies to validate and test the technology-choice decision guide and to calculate the cost effectiveness of alternative tracking methods. Technologies used in marine tracking were out of the scope of the present paper. Key results Choosing the tracking method best suited for a project requires (1) clearly specifying the data required to meet project objectives, (2) understanding the constraints imposed by the study species and its environment, and (3) calculating the net cost per datum of the various tracking methods available. Key conclusions We suggest that, in most circumstances, global positioning system (GPS) tracking is preferable to other options. However, where weight and environmental limitations prevent the use of GPS, alternatives such as Argos satellite Doppler-based positions (Argos) or very high frequency (VHF) can function adequately. Implications The present paper provides simplified criteria for selecting the best wildlife satellite tracking technology for different situations.

Foraging movements of female bushy-tailed wood rats (Neotoma cinerea)

1996 ◽  
Vol 74 (5) ◽  
pp. 798-801 ◽  
Author(s):  
Michael G. Topping ◽  
John S. Millar
Keyword(s):  
Breeding Season ◽  
Rocky Mountains ◽  
Food Supply ◽  
Canadian Rocky Mountains ◽  
Long Distance ◽  
Neotoma Cinerea ◽  
Nocturnal Foraging ◽  
Breeding Seasons ◽  
Foraging Movements ◽  
Foraging Radius

Nocturnal foraging movements of female bushy-tailed wood rats (Neotoma cinerea) in the Canadian Rocky Mountains, Alberta, were monitored using radiotelemetry over two breeding seasons (1993–1994). Total distance moved and maximum foraging radius from the nest per night were calculated for individual females throughout the breeding season. Movements during pregnancy, lactation, and the postreproductive period did not differ significantly. Females moved much farther (up to 470 m) from the nest than previously reported for this species (60 m). Such long-distance movements may be related to the availability of an appropriate food supply.

scholarly journals Long-distance dispersal in red foxes Vulpes vulpes revealed by GPS tracking

2018 ◽  
Vol 64 (6) ◽  
Author(s):  
Zea Walton ◽  
Gustaf Samelius ◽  
Morten Odden ◽  
Tomas Willebrand
Keyword(s):  
Vulpes Vulpes ◽  
Gps Tracking ◽  
Long Distance Dispersal ◽  
Red Foxes ◽  
Long Distance

GPS tracking of the foraging movements of Manx Shearwaters Puffinus puffinus breeding on Skomer Island, Wales

Ibis ◽  
2008 ◽  
Vol 150 (3) ◽  
pp. 462-473 ◽  
Author(s):  
T. C. GUILFORD ◽  
J. MEADE ◽  
R. FREEMAN ◽  
D. BIRO ◽  
T. EVANS ◽  
...  
Keyword(s):  
Gps Tracking ◽  
Foraging Movements

scholarly journals Remotely sensed wind speed predicts soaring behaviour in a wide-ranging pelagic seabird

2017 ◽  
Vol 14 (132) ◽  
pp. 20170262 ◽  
Author(s):  
Rory Gibb ◽  
Akiko Shoji ◽  
Annette L. Fayet ◽  
Chris M. Perrins ◽  
Tim Guilford ◽  
...  
Keyword(s):  
Wind Speed ◽  
High Frequency ◽  
Remotely Sensed ◽  
Gps Tracking ◽  
Fine Scale ◽  
Long Distance ◽  
Flight Behaviour ◽  
And Migration ◽  
Pelagic Seabird ◽  
Wind Patterns

Global wind patterns affect flight strategies in many birds, including pelagic seabirds, many of which use wind-powered soaring to reduce energy costs during at-sea foraging trips and migration. Such long-distance movement patterns are underpinned by local interactions between wind conditions and flight behaviour, but these fine-scale relationships are far less well understood. Here we show that remotely sensed ocean wind speed and direction are highly significant predictors of soaring behaviour in a migratory pelagic seabird, the Manx shearwater ( Puffinus puffinus ). We used high-frequency GPS tracking data (10 Hz) and statistical behaviour state classification to identify two energetic modes in at-sea flight, corresponding to flap-like and soar-like flight. We show that soaring is significantly more likely to occur in tailwinds and crosswinds above a wind speed threshold of around 8 m s −1 , suggesting that these conditions enable birds to reduce metabolic costs by preferentially soaring over flapping. Our results suggest a behavioural mechanism by which wind conditions may shape foraging and migration ecology in pelagic seabirds, and thus indicate that shifts in wind patterns driven by climate change could impact this and other species. They also emphasize the emerging potential of high-frequency GPS biologgers to provide detailed quantitative insights into fine-scale flight behaviour in free-living animals.

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