Good morning,
I had a mystery bird calling last night and I'm hoping someone here can help me figure it out. The audio below was recorded at approximately 9:30PM Eastern Time. It's a very rural area south of Chapel Hill, NC near a large beaver pond (approx 5 acre pond.) The pond has a wintering population of Canada Geese on it, about a dozen, and gets Wood Ducks and Hooded Mergansers.
The audio (linked below) contains a series of whistles. The whistles are in 2 pitches (900hz and 1200hz), which makes me think it either 2 birds calling to each other or a single bird changing pitch.
The 'low bird' calls once at 3.5s, followed by the 'high bird' calling 3 times (5.5s, 7.5s, 9.5s), followed by the 'low bird' calling at 11.5s. The last 2 calls of the 'high bird' are distinct 2-note calls, like tu-tooo. And the last call of the 'low bird' is also 2-note but has a distinct downward slur to it. I've attached a copy of the Audacity spectrogram and linked to the audio on iNaturalist below.
Let me know what you all think.
Thanks,
Mark
I had a mystery bird calling last night and I'm hoping someone here can help me figure it out. The audio below was recorded at approximately 9:30PM Eastern Time. It's a very rural area south of Chapel Hill, NC near a large beaver pond (approx 5 acre pond.) The pond has a wintering population of Canada Geese on it, about a dozen, and gets Wood Ducks and Hooded Mergansers.
The audio (linked below) contains a series of whistles. The whistles are in 2 pitches (900hz and 1200hz), which makes me think it either 2 birds calling to each other or a single bird changing pitch.
Birds (Class Aves)
Birds in March 2024 by Mark Montazer. This was recorded about 600ft from a 5 acre beaver pond. It's either 2 birds interacting with eac...
www.inaturalist.org
The 'low bird' calls once at 3.5s, followed by the 'high bird' calling 3 times (5.5s, 7.5s, 9.5s), followed by the 'low bird' calling at 11.5s. The last 2 calls of the 'high bird' are distinct 2-note calls, like tu-tooo. And the last call of the 'low bird' is also 2-note but has a distinct downward slur to it. I've attached a copy of the Audacity spectrogram and linked to the audio on iNaturalist below.
Let me know what you all think.
Thanks,
Mark