Do birds fly in clouds ?
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Do birds fly in clouds ?
US Air birdstrike incident got me thinking about whether birds fly in clouds and if they do what do they use as attitude reference.
Does anyone know ?
Does anyone know ?
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I've had two significant bird strikes at night, each at 10,000', both about 0100 in the morning. One in a Cessna 182, and the other in a Learjet 35A. The Cessna was messy, but undamaged (it was a big bird), and the Learjet's radome was shattered and the copilot side windshield damaged.
Birds are found in instrument conditions. I've found them there. I have no idea how they maintain their attitude or their direction, but I've seen birds, usually larger ones, in IMC on occasion.
Birds are found in instrument conditions. I've found them there. I have no idea how they maintain their attitude or their direction, but I've seen birds, usually larger ones, in IMC on occasion.
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Owls are night rated and equipped (and oh so silent) In fact night aerobatic. One passed me walking dogs half an hour ago at head height pulled up and virtually stall turned onto a branch. Very skilful!
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Acording to our Birdy there are a couple of types of goose that do, and for that matter IMC as well at anywhere between 1000ft and 15000ft.
But only when migrating they have one thing in common they are all bigger than the caa Seagull.
If you goggle about it there are quite a few articles on the subject
But only when migrating they have one thing in common they are all bigger than the caa Seagull.
If you goggle about it there are quite a few articles on the subject
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The bar tailed godwit migrates to/from Alaska/New Zealand.
One female bird been tracked flying the southbound leg non-stop in 8 days, a distance of 7270 miles !
She maintained speeds of between 30mph and 44mph, at altitudes of up to 6,500 ft., so had plenty of night flying experience at the end of that trip.
I wonder what the chances are of completing the trip in the northern hemisphere autumn/southern spring without going IMC at some point.
One female bird been tracked flying the southbound leg non-stop in 8 days, a distance of 7270 miles !
She maintained speeds of between 30mph and 44mph, at altitudes of up to 6,500 ft., so had plenty of night flying experience at the end of that trip.
I wonder what the chances are of completing the trip in the northern hemisphere autumn/southern spring without going IMC at some point.
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Some more commentary in this thread over at Tech Log
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I was always taught, basically no. They are day VFR only.
Tim
Tim
I have also had an Eagle fill the screen over the Alps at 14000 feet. It was a fantastic sight to see that bird of prey drop a wing and avoid my aircraft at such close proximity.
Also had another large bird miss the prop and hit the tail on my second solo many moons ago in a C152 the sound was horrendous and scared the Sh~t out of me
In cloud ? Not yet
Pace
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I've seen huge vultures over Spain at c. 9000ft.
They are not as attractive as they used to be, though Virgin are still doing all they can to keep up the reputation. I do agree some of the low cost airline ones are pretty big...
You will find the big birds at high alt's (can be > FL300) and at night as well.
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My two bird strikes were day VFR. Both in a helicopter at around 1000ft within 10 miles of the coast.
I have never seen a bird (or much else) in IMC or at night.
I do hear migrating birds flying over my place in Cornwall at dawn and dusk.
IO540 - Sir Richard B's airline seems to be the only one valuing aesthetics these days
.
Perhaps we could have som input from the cabin crew forum here?
Which airline has the hottest (female) cabin crew?
SB
I have never seen a bird (or much else) in IMC or at night.
I do hear migrating birds flying over my place in Cornwall at dawn and dusk.
IO540 - Sir Richard B's airline seems to be the only one valuing aesthetics these days
.Perhaps we could have som input from the cabin crew forum here?
Which airline has the hottest (female) cabin crew?
SB
Birds do fly at night, and are able to fly in cloud, although probably not for long periods of time.
Large species of vultures (Gyps) can be seen at altitudes of around 10-15000ft.
Ruppels Vulture Gyps rueppellii holds the record for high flying - more than 37000ft. (Bird Migration By Thomas Alerstam, David A. Christie, Astrid Ulfstrand - Cambridge University Press)
This vulture is generally seen in the regions of central Africa.
Species of ducks, geese and swan and waders are examples of long distance migratory birds.
Large species of vultures (Gyps) can be seen at altitudes of around 10-15000ft.
Ruppels Vulture Gyps rueppellii holds the record for high flying - more than 37000ft. (Bird Migration By Thomas Alerstam, David A. Christie, Astrid Ulfstrand - Cambridge University Press)
This vulture is generally seen in the regions of central Africa.
Species of ducks, geese and swan and waders are examples of long distance migratory birds.
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Migrating geese fly at upper flight levels, and I remember seeing a pic of a goose strike on the wing of DC 10. There was a report in New Scientist which suggested this to be normal goose procedure to take advantage of jet streams. It was also suggested that the birds would be in a "low metabolic state" which presumably means they would not be keeping a good lookout 
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I hit a big one at BHX!
Back in 2000 (IIRC have to check my log-books) I hit a biggie at 1200' in dense clag whilst on R/W 15 ILS. Not sure what type but it could have been a large gull ... certainly plenty of sh*t and white feathers... and a nice dent on the port-wing leading-edge of the KingAir too! Miss those days. bm