Przewalski’s Horses (Equus ferus przewalskii) Responses to Unmanned Aerial Vehicles Flights under Semireserve Conditions: Conservation Implication

Table 2

Comparison of alert height and run away height between age and sex of Przewalski’s horses.

	Variables	Number	Alert height (m) ± SE	t-test	Run away height (m) ±SE	t-test
Age	Immature	9	4.67 ± 0.87		1.22 ± 0.4
	Adults	53	20.58 ± 10.46		5.18 ± 8.82
Sex	Males	14	26.85 ± 18.52		11.50 ± 12.61
	Females	48	15.85 ± 6.01		2.11 ± 0.84

Alert height, height for horse to notice UAVs; run away height, height for horse to move away (means with standard errors). “Number” refers to the number of flights: only one horse was scored when the drone was flown over a herd.