There was an Owl calling last night around 12:45 and River Otters chirping around 3 and 5am. This morning there was an interesting intro to Red Squirrel chatter that I’ve included a clip of.

Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

River Otter and Mystery Calls: More of the River Otter and Mystery Calls. In this clip, there is an otter chirping, then the mystery (possibly gull?) call comes in with the otter. It sounds to me like the second type of call is from an animal that’s moving around faster than I would expect an otter to (which would incline me to think it’s a bird), but I am uncertain how well I can actually interpret the spatial cues in these recordings.
Download River Otter and Mystery Calls

Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

Red Squirrel: The rapid call at the beginning of this clip was something I don’t remember hearing before.
Download Red Squirrel

Fairly quiet night. There were some distant owl calls around 5:50 this morning, but nothing clear enough to inspire me to upload a clip. Mostly I’m trying to keep track of how often the owls vocalize. The wind and rain make it hard to say for sure, but it seems like a sizable proportion of days when it’s quiet enough to hear owls without them be right in the back yard, I do catch one at some point during the night.

Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

Mystery Call: This is a very brief single call. It doesn’t sound at all familiar to me.
Download Mystery Call

Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

Bird Calls: This clip consists of the last 30 seconds of Winter Wren calls that lasted for close to two minutes. I’m not sure whether it was alarming something or not. Also of interest is the bird that starts calling in the last few seconds. I think it is a Chestnut-backed Chickadee, but I am not sure about that.
Download Bird Calls

A quiet night. I did catch a single shorebird-like call again, but did not include the clip since it was basically the same as yesterday’s.

Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

Varied Thrush Calls: This Varied Thrush gave a nice demonstration of some of the different calls they make.
Download Varied Thrush Calls

More mystery calls last night. Also caught a distant screech-owl a couple of different times, but did not include a clip since its calls were fairly quiet and did not really sound any different than other ones I’ve posted previously. The wind kicked up a bit as daylight came.

Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

Otter/Mystery Calls: I think the calls at the start of clip are from a River Otter, but I’m not sure. They sound somewhat like the mystery calls that I was thinking might be gulls from the night before. The last couple of calls near the end (after a couple of seconds without any) sound (and look on the spectrogram) qualitatively different, but that could be due to proximity and/or echo effects, I suppose.
Download Otter/Mystery Calls

Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

Otter/Mystery Calls: In this clip I’m pretty confident there are otter chirps, I do not know why a Gull would be calling along with an otter, so this clip makes me suspect that the calls I was thinking were gulls may actually be otter vocalizations.
Download Otter/Mystery Calls

Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

Duck Flight: I am pretty sure the whistling noises in this clip are from the wing feathers of flying ducks. I’m not sure what species (nor whether it is possible to tell the species by this sound). I think they may have flown a circle around the neighborhood, as the sound lasted for longer than I would expect on a direct fly-over (though I didn’t include everything in this clip).
Download Duck Flight

Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

Mystery Call: A single call that I believe I’ve heard before (and included a clip of). It sounds rather shorebird-like, and it occured to me that it may be a Wilson’s Snipe. However, none of the recordings I have found so far of Wilson’s Snipe include a call like this.
Download Mystery Call

Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

Chestnut-backed Chickadees and Wind: Chestnut-backed Chickadees calling while the wind blows through the trees.
Download Chestnut-backed Chickadees and Wind

Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

Raven Calls and Wind: I think this fast calling Raven was flying, but I’m not sure.
Download Raven Calls and Wind