수평속도가 가장 빠른 새?

"Most white-throated needletails occur in Australia between October and April, which is when most New Zealand records have occurred. Needletails are gregarious and spend most of the time flying, however they will roost perched on trees. They are reported to be the fastest flying bird, travelling at 170 kph – one source even suggesting that they can attain 349 kph in straight flight!"

바늘꼬리칼새는 착륙을 않고 장기간 하늘에서만 나는 새인데 시속 170km으로 나는 걸 관측했다고. 심지어 수평속도로 시속 349km으로 송골매의 급강하속도와 맞먹는다는 주장도... 그러나 측정근거가 정확히 밝혀지지 않았다는....