How to improve the accuracy of height data from bird tracking devices? An assessment of high-frequency GPS tracking and barometric altimetry in field conditions

Table 2 Advantages and disadvantages of high-frequency GPS tracking and barometric altimetry, compared to standard low-frequency GPS tracking

	High-frequency GPS tracking	Barometric altimetry
Advantages
Increased vertical accuracy	X	X
Increased horizontal accuracy	X
Potential for detailed trajectory analyses	X
Disadvantages
High battery demand	X
Intensive management of tag settings required	X
Sampling only during restricted time periods	X
Sampling bias towards periods of good solar charging conditions	X
Weather data required		X
Reduced accuracy in unstable weather conditions		X
Increase of tag weight		X

ISSN: 2050-3385