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Posts Tagged ‘Birds activity’

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This two midsummer recordings were made around four o´clock in the morning 15th of July 2017 nearby Arnarholt farm in Stafholtstungur, in west of Iceland. It is recorded on two stereo channels with two different microphones because usually every time I recorded in this place the recordings has been disturbed by traffic noise all night long. But somehow for some unexplained reason no car went around nearby road for more than two hours, so I got a wonderful recording this morning.
I placed those two microphone rigs very close to each other and pointed them toward north. Afterwards I could not decided which of those recordings were better so it is yours to decide which you like.
There are many bird species in this recording. Common Snipe, Golden Plover, Whimbrel, Common Redshank, Black Taled Godwit, White Wagtail, Black headed Gull, Winter Wren, Northern Wheatear, Snow Bunting, Rock Ptarmigan, Common Starling, Redwing, Great Northern Dever, Whooper Swan, Graylag Goose and probably other species. Birds like Starling and Redwing are flying between branches in nearby trees.

My favorite microphones for nature recordings are Sennheiser MKH20 an omni-directional condenser microphone and Rode NT1A (slightly modified), a large capsule cardioid polar pattern studio condenser microphone. Both these mics have lowest self-noise available on the market.
I am used to use MKH20 in AB setup which mean the mics are in 40-45cm spaced parallel position (AB40). Then I turn the capsules 2-5° outward which gave me sometimes slightly „wider or more open space feeling“. This setup give me a stereo recording, 360° surround the rig.
My second best omni-directional ultra low noise mic for nature recordings is AT4022 but it does not sound as „musical“ or „natural“ as MKH20, so it is not as often in my tool box,
Cardioid mic detect sound mainly from one direction. so I use NT1A in different circumstances.
Lets say I like to record a birdsong. At the same time it is disturbed with unwanted noise, coming from another direction like waterfall, river flow, surf or traffic noise. I can place the backside of the cardioid mic to the noise source which mean I will get less of the unwanted noise and more of the birdsong.
In last two or three years I have not used NT1A in ORTF or NOS setup for outdoor recordings. But instead use AB4, same as for MKH20, which seems to give less phase error for the sound behind the rig.

These two recordings are NOT good examples for this two different mics in critical circumstances because no car passed by behind the rigs and most of the birds activity was also front of the rigs. But it gives a nice insight how this two different mics sounds and how the self-noise act in „quiet“ nature recordings.
NT1A was inside Rycote Cyclone + fur. MKH20 was inside Rycote WS2 windshield + fur. Both rigs are in AB40 +3°
I use MixPre6 in this recording. There is no doubt, the new Sound devices Kashmir mic preamplifier is ultra low noise and a sweet step forward to get better field recordings.
The HPF was at 40Hz and the gain was at 50dB for NT1A and 43dB for MKH20. The gain settings mainly get this arrangement because then both rigs sounds have equal level in the headphones while I was recording. In post the gain was increased almost 30dB on both stereo channels, up to -10dB.
Specrogram shows „all“ frequencies was bellow 8Khz so to lower unwanted mic self-noise I pull everything above 10Khz down with EQ (-5db @ 11Khz & -30dB @ 15Khz) .
This is a „quiet“ recording which mean you should listen to it at low level in quality headphones or speakers in quiet place.

NT1A recording
(mp3, 256kbps / 50,6Mb)

MKH20 recording
(mp3, 256kbps / 50,6Mb)

Here are two shorter version of this recording but now without high frequency cutoff and the gain level is normalized up to 0dB, so it should be easy to hear the mic self-noise in low quality headphones and PC amplifiers.
It is also easy to notice that MKH20 is covering 360° of the surround soundscape, while NT1A is only covering 180° with less bird songs and other activity.

NT1A. Without high freq cut off, normalized to 0dB
(mp3, 256kbps / 11Mb)

MKH20 Without high freq cut off, normalized to 0dB
(mp3, 256kbps / 11Mb)

Recorder: Sound devices MixPre6
Mics: Rode NT1a and Sennheiser MKH20 (AB40 setup)
Pix. Canon EOSM

Location: 64.673460, -21.629304
Weather: Calm, cloudy, ca. 7°C

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One year ago I was recording in Skaftafell national park and neighborhood in southeast of Iceland. One of my favorite recording place in this area is not exactly in the park, but on Skeiðarársandur, a huge broad sandy wasteland along Iceland’s south-eastern coast, between the Vatnajökull icecap and the sea.
One of the reason I love this place is the silence. There is almost „nothing“. Just the sand. In the horizon far away is the glacier Vatnajökull on the one side, and on the other side just the sky. The only thing that disturbs this silence is traffic or the wind. So when it is calm during the night and traffic is down it is possible to listen deep into this amazing open space. There is not much life. There is probably only Rock Ptarmigan that lives there all year around. Other species are migrants during the summertime so it is easy to say, Rock Ptarmigan is the residents of silence.
This recording is a recording of silence. Most people will not hear anything in this circumstances, probably only its own heartbeat and notice „they have“ tinnitus. But with best equipment is it possible to listen deeper into this quiet place.
You will hear some birds and insects. With good headphones you will hear the rumble sound of heavy surf on the beach 20 to 30 km far away.
BUT this recording is not completely quiet. So be careful while listening. Two birds, a male and female Rock Ptarmigan, are coming very close, „talking“ loud into your ears (2:05).
It is also worth to listen to another earlier recording from this place. „Stories from Skeiðarársandur„.
Quality open headphones are recommended while listening at low to mid level, or in speakers at low level.

(256kbps / 61Mb)

Recorder: Sound devices 788
Mics: Sennheiser MKH20 (AB40 +5° outward)
Weather: Calm, cloudy, +5°C
Location: 63.969892, -17.160072

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I have published many times recordings from the Nature Reserve Flói in southwest Iceland, so I will not introduce that area again.
During the years I remember couple of times when curious sheeps have disturbed the recording. This is one of them.
This peace is a 30 minutes of nine hour overnight recording. It was recorded between 7 and 8 o´clock in the morning 25th of July 2015.
The recording is not only disturbed by the sheeps, it is also highly disturbed by tourist traffic, especially in the air. Jets are arriving and leaving the country and smaller planes in sightseeing so this peaceful area is not especially quite this time.
Quality open headphones are recommended while listening at medium level.

(256kbps / 57,2Mb)

Recorder: Sound devices 788
Mics: RodeNT1 (NOS) & MKH20 (AB40) as close together as possible
Pix: Canon EOSM
Location: 63.901026, -21.192189
Weather: Calm, cloudy, around 11°C

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I am used to feed birds daily in my garden with all kinds of leftovers.
There are always some birds that watch my garden every day, and when they see me in the garden, some starling give a high pitch signal and some of them fly away. But shortly after that they come back with a flock of other birds, normally common starlings and redwings. Some birds like one blackbird and some redwings are now extra gentle around me while I prepare the food in the garden.
Christmas day, 25th of December 2016, was just like another „feeding day“. But it was snowing, so the traffic noise wash less than usual and therefore a perfect day to record a birds activity.
This recording starts slowly. Just few birds have arrived when the recording starts. But in the end the birds have eaten almost everything and they start singing, packed in the trees all a around my house.

(224kbps / 48Mb)

Recorder: Sound devices 788
Mics: Rode NT1a in Rycote Cyclone (AB50 setup)
Pix: GoPro Hero3
Weather: Cloudy, light breeze, snowing and -3°C

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An outwash plain, also called a sandur is a plain formed of glacial sediments deposited by meltwater outwash at the terminus of a glacier. As it flows, the glacier grinds the underlying rock surface and carries the debris along. The meltwater at the snout of the glacier deposits its load of sediment over the outwash plain, with larger boulders being deposited near the terminal morraine, and smaller particles travelling further before being deposited. Sandurs are common in Iceland where geothermal activity accelerates the melting of ice flows and the deposition of sediment by meltwater.
The original sandur from which the general name is derived is Skeiðarársandur, a broad sandy wasteland along Iceland’s south-eastern coast, between the Vatnajökull icecap and the sea. Skeiðarársandur is the largest sandur in the world, covering an area of 1,300 km2 (500 sq mi). Volcanic eruptions under the icecap have given rise to many large glacial bursts (jökulhlaups in Icelandic), most recently in 1996, when the Ring Road was washed away (minor floods have also occurred since then). This road, which encircles Iceland and was completed in 1974, has since been repaired. The 1996 jökulhlaup was caused by the eruption of the Grímsvötn volcano, with peak flow estimated to be 50,000 m3/s (1,800,000 cu ft/s) compared to the normal summer peak flow of 200 to 400 m3/s (7,100–14,100 cu ft/s). Net deposition of sediment was estimated to be 12,800,000 m3 (450,000,000 cu ft).
The main braided channels of Skeiðarársandur are the Gígjukvísl and Skeiðará rivers, which incurred net gains of 29 and 24 cm (11.4 and 9.4 in) respectively during the 1996 jökulhlaup. In the Gígjukvísl there was massive sediment deposition of up to 12 m (39 ft), which occurred closest to the terminus of the glacier. The erosional patterns of Skeiðarársandur can be seen by looking at the centimeter-scale elevation differences measured with repeat-pass laser altimetry (LIDAR) flown in 1996 (pre-flood), 1997, and 2001. Of the overall deposition during the 1996 jökulhlaup, nearly half of the net gain had been eroded 4 years after the flood. These two rivers on the sandur display drastically different erosional patterns. The difference in sediment erosion can be attributed to the 2 km (1.2 mi) wide trench near the terminus where the Gígjukvísl flows, in contrast with the Skeiðará, which has braided flows directly onto the outwash plain. The Gígjukvísl river is where some of the highest level of sediment deposit occurred and also where the largest erosion happened afterward. This indicates that these massive jökulhlaup deposits may have a large geomorphic impact in the short term, but the net change on the surface relief could be minimal after a couple years to a decade. (*Wikipedia)
This recording is just 23 minutes of 1o hours long overnight recording. It is very quiet and highly amplified. The microphones are unexpected located near to Northern Wheatear´s nest which is between stones in old ruins in the middle of Skeiðarársandur. You can hear wing flaps and some kind of a conversation between the birds and the youngsters. The birds sounds a little bit out of phase but that could be either because the bird is mostly behind the microphones, or the stone wall, or because the fury windshield was still soaking wet after heavy rain one hour earlier.
At 1:35 min a thunderous boom sounds from glacier in distance. During the recording the weather changed from calm to be windy.
Quality open headphones are recommended while listening at low to mid level, or in speakers at low level.

Sögur af Skeiðarársandi 1. hluti

Hér er á ferðinni rúmlega 20 mínútna löng upptaka sem er partur af 10 klst langri næturupptöku frá því 29. maí 2016 á Skeiðarársandi. Á sandinum svo til miðjum er hlaðin rúst sem líklega hefur gengt því hlutverki að vera fjárrétt áður en árnar á sandinum voru brúaðar. Í upptökunni má heyra að í vegghleðsluni er hreiður Steindepils. Hann pirrar sig eitthvað á óboðnum gesti þessa nótt, hljóðnemunum, en virðist svo líka eiga einhver samskipti við unga sína með lágværu tísti eða muldri. Heyra má að á þessum rúmu 20 mínútum að veðrið breytist frá því að vera logn yfir í rok.
Mælt er með því að hlusta á upptökuna í góðum opnum heyrnartólum og á miðlungs- lágum hljóðstyrk.

(256kbps / 43Mb)

Recorder: Sound Devices 788
Mics: Sennheiser MKH20 (AB40)
Pix: Canon EOS-M
Weather & time: Clam and windy, Drissle rain, at 2AM
Location: 63.969892, -17.160032

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It is easy to go in to a special mood when I think of the Icelandic highland and all the fabulous moments I have experienced there twenty to thirty years ago.
This quiet black desert gives me always a wonderful feeling. Just like I am in love.
Endless fields of weather beaten black and gray gravel, with a soundscape of wind and water, or just a real silence.
River sources and oases are there in many places. This water sources have very often some life. If not just a thin layer of sensitive moss, then grassland with birds, insects and even mammals.
Sadly, many of these wonderful quiet places have been under a threat by humans activity last decades, so they are not anymore this magic places as they were for a lonely cyclist more than twenty years ago. Some of them has been totally destroyed, like huge area in the east highland, like Vesturöræfi 
For that reason I will not inform where the following recording was made. I just like to say, it was recorded in the highland in one of my „hidden places“ that still exists and has not been destroyed with hydro power plant, tourists, offroad driving motorist, or human waste.
This recording is very quiet. It contains a dunlin, howling arctic fox, europian golden plover, red necked phalarope and pink footed goose.
The background noise is a waterflow from nearby water source.
This was recorded 17th of July 2015 around two o´clock in the morning.
Quality open headphones are recommended while listening at low to mid level, or in speakers at low level .

Tófuvæl

Það verður að viðurkennast að á þeim árum sem ég ferðaðist sem mest um landið á reiðhjóli, var ég ekki oft var við tófu, hvað þá að heyra í þeim. Eftir að hætt var að greiða mönnum fyrir skott hafa tófuveiðar svo til lagst af. Tófu er því að fjölga og það líklega um allt land því ég er farinn að sjá hana oftar og heyra.
Það gerðist svo í sumar að ég náði að hljóðrita tófuvæl á hálendinu á einum af mínum leyndu eftirlætis dvalarstöðum frá fyrri tíð.
Í upptökunni hér fyrir neðan má heyra í tófu á 5. mínútu. Hún er því miður í talsverðri fjarlægð enda kannski ekki furða með mann í næsta nágrenni. Þótt þetta sé ákaflega þögul upptaka heyrist líka í lóuþræl, heiðlóu og grágæs, sem og óðinshönum í návígi á 18. mínútu.

 Download mp3 file  (256kbps / 52Mb)

Recorder: Sound device 744
Mics: Rode NT1a (NOS)
Pics: Canon EOS M
Weather: Cloudy, drissle rain, calm- up to 8 m/s, around +3¨C
Location: Sorry, no comment

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This recording is almost straight forward from the recording I posted about a year ago “Dawn in Stafholtstungur, part 1”.
Now the traffic in the county increase slowly from previous recording, but all the time it is possible to listen to the birds activity in details around the recording place.
This was recorded the 18th of October 2013, between 6 and 7 in the morning near the farm Arnarholt.
Quality headphones are recommended while listening at low level in relaxed position.

Dögun í Stafholtstungum, annar hluti

Hér er á ferðinni  svo til beint framhald af upptöku sem fór á vefinn fyrir um ári síðan; “Dögun í Stafholtstungum, fyrsti hluti”.  Heyra má að umferð eykst í sveitinni  þar sem klukkan er farinn að ganga sjö.  Gera má ráð fyrir að það heyrist í sumum bílum, þá líklega flutningabílum, um langan veg  frá Norðurárdal suður til Borgarfjarðar. En þegar þögnin er sem mest er vel hægt að heyra í fuglum  athafna sig í smáatriðum nærri upptökustaðnum.
Upptakan var gerð við bæinn Arnarholt þann 18. október 2013
Mælt er með því að hlusta á þessa upptöku í góðum heyrnartólum og á lágum hljóðstyrk um leið og slakað er á í þægilegum stól eða rúmi.

Download mp3 file (256kbps / 60Mb)

Recorder:  Sound devices 744
Mics: Sennheiser MKH20 (AB40)
Pix: Canon EOS M
Rec. location: 64.672593, -21.629240
Weather: Clear sky, calm, -4°C

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