Tracking Technology

MPI-AB’s novel animal-borne sensor technology represents a significant advancement in wildlife tracking, enabling us to monitor small species at an unprecedented scale.

MPI-AB’s novel technology allows us to understand crucial aspects of animal behavior and ecology, such as breeding performance, connectivity, dispersal, and mortality on an individual level within representative species groups. Traditionally, tracking such small animals has been challenging due to the limitations in size, weight, data retrieval, and cost of tracking devices. However, with the advent of IoT, mainly through the European Sigfox IoT network, we can now deploy lightweight, cost-effective tracking tags that weigh between 1 and 3 grams. These tags are designed to measure parameters such as energy expenditure (VeDBA), temperature, barometric pressure, light level, location (with a median accuracy of 12.89 km [MAD 5.17]), and mortality (inferred from VeDBA) over long periods (months to years).

The IoT technology behind these tracking devices is rooted in advancements originally developed for commercial and industrial purposes, such as tracking delivery items or monitoring environmental conditions in real-time. TMPI-AB, however, has adapted these technologies to answer similar questions about wildlife, focusing on the position, movement, surrounding environment, welfare, and dynamics of free-roaming animals instead of commodities. The Sigfox network, a Low Power Wide Area Network (LPWAN), is particularly well-suited for this application because it provides ultra-long-range transmissions (up to 280 km) to a dense network of terrestrial base stations, with good coverage across most of western Europe. This communication infrastructure enables the wireless transmission of onboard-processed (edge-computed) sensor data from the tagged animals to Movebank, allowing us to continuously monitor behavior in real-time.

In our project, we will be using three transmitter models:
ICARUS-NanoFox – for common swifts
ICARUS-TinyFoxTwo – for common blackbirds, song thrushes, and European starlings
ICARUS-TinyFoxSolar – for European kestrels

Below, you will find detailed information about these models. On the Tagging Methods page, you will find recommendations from our experts on tagging methods for these transmitters and species.

ICARUS-NanoFox

The first one-gram multi-sensor device featuring IoT connectivity and edge computing. Designed for studies on small animals like swifts and bats, it enables detailed data collection in a compact form factor.

Size and mass

1.0 g
15 x 12 x 5 mm (excluding loops)

Sensors

Edge-computed VeDBA
Temperature
Barometric pressure
Position (accuracy: 12.89 km; median average deviation: 5.17 km)

Transmission Sigfox
Runtime

5 months (1 message / 2 days)

ICARUS-TinyFoxTwo

A lightweight, battery-powered bird tracking device equipped with IoT connectivity and reverse GPS functionality using Sigfox trilateration. Capable of monitoring fine-scale activity through edge computing, it offers up to 20 months of battery life, making it ideal for tracking migratory species like blackbirds and starlings.

Size and mass

3.0 g
37 x 14 x 6.5 mm

Sensors

Edge-computed VeDBA (hourly summary)
Temperature
Light color
Position (accuracy: 12.89 km; median average deviation: 5.17 km )

Transmission Sigfox
Runtime 20 months (2 messages/day, VeDBA + position)

ICARUS-TinyFoxSolar

This solar-powered tracking device uses a novel design featuring a supercapacitor. It requires just two minutes of direct sunlight to fully charge, allowing it to transmit positional data, edge-computed acceleration, temperature, and air pressure measurements.

Size and mass

3.0 g
24 x 16 x 11 mm

Sensors

Edge-computed VeDBA, pitch, roll, wing beat frequency
Temperature
Barometric pressure
Light intensity
Position (accuracy: 12.89 km; median average deviation: 5.17 km )

Transmission Sigfox
Runtime Infinite (solar), but no messages during night
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