ML615219691

Примечания

This is a recording of a flock of approximately 50 pine siskens calling and singing from 3 to 4 coniferous trees. There is one gap in the recording to remove handling noise – approximately 0.5 seconds of the recording was replaced. Reduced the impact of low frequency rumble from wind through the use of a scientific filter, 250 Hz cutoff, order 2.

Подробности наблюдения

Counted in 10s

Дополнительные виды

• Black-capped Chickadee Poecile atricapillus