Miniaturized GPS position logger for tracking of small mammals

The satellite tracking of animal individuals remains a signiücant source of knowledge in the area of zoology. The greatest limitation is the size and weight of the satellite position loggers that prevents the usage of satellite telemetry on three-fourths of mammal and bird species. We present an architecture and design of a miniaturized GPS logger with the weight below ten grams that would be suitable for the studies targeting demanding study groups such as the only European flying fox. Our design combines the GPS logging with traditional telemetry signaling, typically used for manual radio tracking, allows for radio-transmitted position data retrieval and the 2-3 days of battery life. The performance has been verified within a field testing.