The sky below isn’t empty.
Low passes can flush nesting birds and raise their heart rates; bats forage less where there’s noise and movement overhead. All Irish bats are strictly protected — and the legal threshold is disturbance, not harm.
Because the 50–80 m altitude is measured above sea level, over raised ground the real height above a nest can fall into the band where disturbance is strongest. Almost every study so far looks at occasional survey flights — not the same gardens flown over every day, all summer. That gap is the heart of the case.
Read the wildlife & law brief →