Deer (Cervidae) are key components of many ecosystems and estimating deer abundance
or density is important to understanding these roles. Many field methods have been used to …

Since the 1990s, the number of lions (Panthera leo) has declined by about 43% across
African range states. Reliable lion population estimates can contribute to effective …

Drones are increasingly becoming a ubiquitous feature of society. They are being used for a
multiplicity of applications for military, leisure, economic, and academic purposes. Their …

Helicopters used for aerial wildlife surveys are expensive, dangerous and time consuming.
Drones and thermal infrared cameras can detect wildlife, though the ability to detect …

Unmanned aerial vehicles (UAVs) are increasingly used in wildlife surveying, including
estimation of population densities. It is essential that we evaluate and test new survey …

Wildlife abundance surveys are important tools for making decisions regarding nature
conservation and management. Cryptic and nocturnal mammals can be difficult to monitor …

Accurate and efficient geometric calibration is important to precisely acquire geometric
information in thermal cameras. Typically, the calibration procedure involves obtaining …

Biodiversity monitoring is crucial in tackling defaunation in the Anthropocene, particularly in
tropical ecosystems. However, field surveys are often limited by habitat complexity, logistical …

Geoffroy's spider monkeys, an endangered, fast-moving arboreal primate species with a
large home range and a high degree of fission–fusion dynamics, are challenging to survey …

A thermal drone–an unmanned aerial vehicle equipped with a thermal camera–is a new tool
in wildlife research. It enables effective surveys of animal species difficult to monitor with …