Video Cameras on Wild Birds

  title={Video Cameras on Wild Birds},
  author={Christian Rutz and Lucas A. Bluff and Alex A. S. Weir and Alex Kacelnik},
  pages={765 - 765}
New Caledonian crows (Corvus moneduloides) are renowned for using tools for extractive foraging, but the ecological context of this unusual behavior is largely unknown. We developed miniaturized, animal-borne video cameras to record the undisturbed behavior and foraging ecology of wild, free-ranging crows. Our video recordings enabled an estimate of the species' natural foraging efficiency and revealed that tool use, and choice of tool materials, are more diverse than previously thought. Video… Expand
Tool use by wild New Caledonian crows Corvus moneduloides at natural foraging sites
Two complementary lines of investigation provide the first quantitative description of larva fishing by wild crows in its full ecological context and evidence for tool selectivity by New Caledonian crows under natural conditions. Expand
Activity profiles and hook-tool use of New Caledonian crows recorded by bird-borne video cameras
Video recordings of New Caledonian crows reveal an ‘expanded’ foraging niche for hooked stick tools, and highlight more generally how crows routinely switch between tool- and bill-assisted foraging. Expand
Grass-Stem Tool use in New Caledonian Crows Corvus moneduloides
An observation of a wild New Caledonian Crow Corvus moneduloides manufacturing two tools from dry grass stems, and using them to extract lizards from the crevices of a fencepost confirms earlier observations with animal-borne video cameras. Expand
Bird-Borne Video-Cameras Show That Seabird Movement Patterns Relate to Previously Unrevealed Proximate Environment, Not Prey
Using miniaturized video cameras and GPS tracking recorders simultaneously, it is shown for the first time that information on the immediate visual surroundings of a foraging seabird, the Cape gannet, is fundamental in understanding the origins of its movement patterns. Expand
A new 'view' of ecology and conservation through animal-borne video systems.
The development and research potential offered by AVEDs are discussed, which are greatest in hypothesis-driven studies that require a fine-scale perspective that other technologies cannot offer. Expand
A quick guide to video-tracking birds
A brief description of the basic equipment and field techniques are provided to enable other researchers to start their own video-tracking studies. Expand
The Ecological Significance of Tool Use in New Caledonian Crows
Stable isotope analysis reveals the nutritional benefits of tool use in wild New Caledonian crows and provides estimates of larva-intake rates and shows that just a few larvae can satisfy a crow’s daily energy requirements, highlighting the substantial rewards available to competent tool users. Expand
Over the past three decades, technological advances for monitoring wild animals have expanded the ability of ecologists to study animal behavior and space use. Currently, researchers are deployingExpand
Vocal culture in New Caledonian crows Corvus moneduloides
The findings reveal that the New Caledonian crow Corvus moneduloides exhibits sufficient social learning mechanisms, and within-population structuring, to generate and perpetuate cultural variation in at least one behavioural domain, opening the door for the simultaneous investigation of vocal and material culture in a nonhuman species. Expand
Development of camera technology for monitoring nests
Photo and video technology has become increasingly useful in the study of avian nesting ecology. However, researchers interested in using camera systems are often faced with insufficient informationExpand


Tool-related Cognition in New Caledonian Crows
The extent to which non-humans understand their physical world is controversial, due to conceptual and empirical difficul - ties. We examine the evidence for physical understanding in the remarkableExpand