:D :raz: :smokin:

Depends on which kind of swallow?

Pseudochelidon
African River Martin Pseudochelidon eurystomina
White-eyed River Martin Pseudochelidon sirintarae
Psalidoprocne
Square-tailed Rough-winged Swallow Psalidoprocne nitens
Cameroon Mountain Rough-winged Swallow Psalidoprocne fuliginosa
White-headed Rough-winged Swallow Psalidoprocne albiceps
Black Rough-winged Swallow Psalidoprocne pristoptera
Fanti Rough-winged Swallow Psalidoprocne obscura
Eastern Saw-Wing (Swallow) Psalidoprocne orientalis
Black Saw-Wing (Swallow) Psalidoprocne holomelaena
Pseudhirundo
Grey-rumped Swallow Pseudhirundo griseopyga
Cheramoeca
White-backed Swallow Cheramoeca leucosternus
Phedina
Mascarene Martin Phedina borbonica
Congo Martin Phedina brazzae
Riparia
Brown-throated Sand Martin Riparia paludicola
Congo Sand Martin Riparia congica
Sand Martin Riparia riparia
Pale Martin Riparia diluta
Banded Martin Riparia cincta
Tachycineta
Tree Swallow Tachycineta bicolor
Violet-green Swallow Tachycineta thalassina
Golden Swallow Tachycineta euchrysea
Bahama Swallow Tachycineta cyaneoviridis
Tumbes Swallow Tachycineta stolzmanni
Mangrove Swallow Tachycineta albilinea
White-winged Swallow Tachycineta albiventer
White-rumped Swallow Tachycineta leucorrhoa
Chilean Swallow Tachycineta meyeni
Progne
Purple Martin Progne subis
Cuban Martin Progne cryptoleuca
Caribbean Martin Progne dominicensis
Sinaloa Martin Progne sinaloae
Grey-breasted Martin Progne chalybea
Galapagos Martin Progne modesta
Peruvian Martin Progne murphyi
Southern Martin Progne elegans
Brown-chested Martin Progne tapera
Notiochelidon
Brown-bellied Swallow Notiochelidon murina
Blue-and-white Swallow Notiochelidon cyanoleuca
Pale-footed Swallow Notiochelidon flavipes
Black-capped Swallow Notiochelidon pileata
Haplochelidon
Andean Swallow Neochelidon andecola
Atticora
White-banded Swallow Atticora fasciata
Black-collared Swallow Atticora melanoleuca
Neochelidon
White-thighed Swallow Neochelidon tibialis
Stelgidopteryx
Northern Rough-winged Swallow Stelgidopteryx serripennis
Southern Rough-winged Swallow Stelgidopteryx ruficollis
Alopochelidon
Tawny-headed Swallow Alopochelidon fucata
Hirundo
Barn Swallow Hirundo rustica
Red-chested Swallow Hirundo lucida
Angolan Swallow Hirundo angolensis
Pacific Swallow Hirundo tahitica
Welcome Swallow Hirundo neoxena
White-throated Swallow Hirundo albigularis
Ethiopian Swallow Hirundo aethiopica
Wire-tailed Swallow Hirundo smithii
White-throated Blue Swallow Hirundo nigrita
Pied-winged Swallow Hirundo leucosoma
White-tailed Swallow Hirundo megaensis
Pearl-breasted Swallow Hirundo dimidiata
Montane Blue Swallow Hirundo atrocaerulea
Black-and-rufous Swallow Hirundo nigrorufa
Ptyonoprogne
Crag Martin Ptyonoprogne rupestris
Rock Martin Ptyonoprogne fuligula
Dusky Crag Martin Ptyonoprogne concolor
Delichon
House Martin Delichon urbicum
Asian House Martin Delichon dasypus
Nepal House Martin Delichon nipalense
Cecropis
Greater Striped Swallow Cecropis cucullata
Lesser Striped Swallow Cecropis abyssinica
Rufous-chested Swallow Cecropis semirufa
Mosque Swallow Cecropis senegalensis
Red-rumped Swallow Cecropis daurica
Striated Swallow Cecropis striolata
Rufous-bellied Swallow Cecropis badia
Petrochelidon
Red-throated Swallow Petrochelidon rufigula
Preuss's Swallow Petrochelidon preussi
Red Sea Swallow Petrochelidon perdita
South African Swallow Petrochelidon spilodera
Forest Swallow Petrochelidon fuliginosa
Streak-throated Swallow Petrochelidon fluvicola
Fairy Martin Petrochelidon ariel
Tree Martin Petrochelidon nigricans
Cliff Swallow Petrochelidon pyrrhonota
Cave Swallow Petrochelidon fulva
Chestnut-collared Swallow Petrochelidon rufocollaris

a simple african or european would have done miami :lol:
and is it holding a coconut by the husk?

have I missed something :confused:

:lol: :wow: :lol: Miami I can't believe you took the time to copy & paste all that! You've just made my day :D (I guess that says a lot about my day, really :clown: )

have I missed something :confused:

Google or Wikipedia will enlighten you ;)

i think its 120mph and the fastest animal on the plannet. :)

or is this something about oral sex? :confused:

or is this something about oral sex? :confused:

Err no....it's Monty Python

It’s a simple question of weight ratiosA 54-year survey of 26,285 European Swallows captured and released by the Avian Demography Unit of the University of Capetown finds that the average adult European swallow has a wing length of 12.2 cm and a body mass of 20.3 grams.4

Because wing beat frequency and wing amplitude both scale with body mass,5 and flight kinematic data is available for at least 22 other bird species,6 it should be possible to estimate the frequency (f ) and amplitude (A) of the European Swallow by a comparison with similar species. With those two numbers, it will be possible to estimate airspeed (U).

In order to maintain airspeed velocity, a swallow needs to beat its wings forty-three times every second, right?Actually, wrong. By comparing the European Swallow with bird species of similar body mass, we can estimate that the swallow beats its wings 18 times a second with an amplitude of 18 cm:

Species Body mass Frequency Amplitude
Zebra Finch 13 g 27 Hz 11 cm
European Swallow 20 g ≈ 18 Hz? ≈ 18 cm?
Downy Woodpecker 27 g 14 Hz 29 cm
Budgerigar 34 g 14 Hz 15 cm

Note that even the tiny Zebra Finch flaps its wings no more than 27 times a second while cruising.

If we ignore body mass and look only at bird species with a similar wingspan, we can estimate an average frequency of 14 beats per second and an amplitude of 23 cm:

Species Wingspan Frequency Amplitude
Budgerigar 27 cm 14 Hz 15 cm
European Swallow ≈ 28–30 cm ≈ 14 Hz? ≈ 23 cm?
Downy Woodpecker 31 cm 14 Hz 29 cm
European Starling 35 cm 14 Hz 26 cm

By averaging all 6 values, we can estimate that an average European Swallow flies at cruising speed with a frequency of roughly 15 beats per second, and an amplitude of roughly 22 cm.

Skip a bit, BrotherLast month’s article on The Strouhal Number in Cruising Flight showed how simplified flight waveforms that graph amplitude versus wavelength can be useful for visualizing the Strouhal ratio (fA/U), a dimensionless parameter that tends to fall in the range of 0.2–0.4 during efficient cruising flight.

For a European Swallow flying with our estimated wingbeat amplitude of 24 cm, the predicted pattern of cruising flight ranges from a Strouhal number (St) of 0.2:



... to a less efficient 0.4:



If the first diagram (St = 0.2) is accurate, then the cruising speed of the European Swallow would be roughly 16 meters per second (15 beats per second * 1.1 meters per beat). If the second diagram (St = 0.4) is accurate, then the cruising speed of the European Swallow would be closer to 8 meters per second (15 beats per second * 0.55 meters per beat).

If we settle on an intermediate Strouhal value of 0.3:



We can estimate the airspeed of the European Swallow to be roughly 11 meters per second (15 beats per second * 0.73 meters per beat).

Three shall be the number thou shalt countAirspeed can also be predicted using a published formula. By inverting this midpoint Strouhal ratio of 0.3 (fA/U ≈ 0.3), Graham K. Taylor et al. show that as a rule of thumb, the speed of a flying animal is roughly 3 times frequency times amplitude (U ≈ 3fA).5


We now need only plug in the numbers:


U ≈ 3fA
f ≈ 15 (beats per second)
A ≈ 0.22 (meters per beat)
U ≈ 3*15*0.22 ≈ 9.9
... to estimate that the airspeed velocity of an unladen European Swallow is 10 meters per second.

Oh, yeah, I agree with thatWith some further study, it became clear that these estimates are accurate, though perhaps coincidental.

An actual study of two European Swallows flying in a low-turbulence wind tunnel in Lund, Sweden, shows that swallows flap their wings much slower than my estimate, at only 7–9 beats per second:

“Compared with other species of similar size, the swallow has quite low wingbeat frequency and relatively long wings.” 7
The maximum speed the birds could maintain was 13–14 meters per second, and although the Lund study does not discuss cruising flight in particular, the most efficient flapping (7 beats per second) occurred at an airspeed in the range of 8–11 meters per second, with an amplitude of 90–100° (17–19 cm).

And there was much rejoicingAveraging the above numbers and plugging them in to the Strouhal equation for cruising flight (fA/U = 7 beats per second * 0.18 meters per beat / 9.5 meters per second) yields a Strouhal number of roughly 0.13:



... indicating a surprisingly efficient flight pattern falling well below the expected range of 0.2–0.4.

Although a definitive answer would of course require further measurements, published species-wide averages of wing length and body mass, initial Strouhal estimates based on those averages and cross-species comparisons, the Lund wind tunnel study of birds flying at a range of speeds, and revised Strouhal numbers based on that study all lead me to estimate that the average cruising airspeed velocity of an unladen European Swallow is roughly 11 meters per second, or 24 miles an hour.

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it's simple really isn't it :p

Do I look like I would really want to spend any time posting something sensible in this thread? :lol:

judging by that picture??

























yes?





















oh...no?

Fo shizzle.

Err no....it's Monty Python

whats the ansewr then?:confused:

whats the ansewr then?:confused:
Does a bear sh1t in the woods?

whats the ansewr then?:confused:

The answer is "Is that an african or european swallow?".

Does a bear sh1t in the woods?

not if its dead. :clown:

The coconut was on a piece of string carried between them.


Ni



Peng




NIIIIIIIIIIIWOM!

We want, a shrubbery!

Lol, gotta crack out my monty python DVD's this weekend methink! Still reckon Life of Brian is the better one they did.

i blow my nose in your general direction you stupid english pig dog. your mother was a hamster and your father smells of elderberries!

now go away, before i taunt you a second time :p

i bought the box set from play.com for a 18quid few weeks ago....worth every penny!

i blow my nose in your general direction you stupid english pig dog. your mother was a hamster and your father smells of elderberries!

now go away, before i taunt you a second time :p Bah ha ha! :lol: That was 'the quote' amongst my mates for a good while! :)

i bought the box set from play.com for a 18quid few weeks ago....worth every penny!

Me too! Although I paid £14! Haven't watched one of them yet, can't remember which one.

Holy Grail is better than Life Of Brian IMO :lol:

EDIT:
i blow my nose in your general direction you stupid english pig dog. your mother was a hamster and your father smells of elderberries!

now go away, before i taunt you a second time :p

Sig'd!

Me too! Although I paid £14!
just checked my account and i paid 14 to :)

Bring out yer dead!

i blow my nose in your general direction you stupid english pig dog. your mother was a hamster and your father smells of elderberries!

now go away, before i taunt you a second time :p


Is it not "I fart in your general direction"? or is that later in the diatribe?

i believe they use both

Is it not "I fart in your general direction"? or is that later in the diatribe?

In this instance it is "I fart..." - Clicky (http://www.imdb.com/title/tt0071853/quotes)

In this instance it is "I fart..." - Clicky (http://www.imdb.com/title/tt0071853/quotes)
meh, get a bird :p

meh, get a bird :p
:lol:

Work is :redface: ...zzzzz... and it's only been an hour :wow:

Pie Iesu Domine, Dona Eis Requiem...
*bonk!*

Pie Iesu Domine, Dona Eis Requiem...
*bonk!*

Pie Iesu....

:lol: :lol:

And the Lord spake, saying, "First shalt thou take out the Holy Pin. Then shalt thou count to three, no more, no less. Three shall be the number thou shalt count, and the number of the counting shall be three. Four shalt thou not count, neither count thou two, excepting that thou then proceed to three. Five is right out. Once the number three, being the third number, be reached, then lobbest thou thy Holy Hand Grenade of Antioch towards thy foe, who, being naughty in my sight, shall snuff it.
:lol:

You don't frighten us with your silly knees-bent running around advancing behavior!

We are now the Knights who say..."Ekki-Ekki-Ekki-Ekki-PTANG. Zoom-Boing. Z'nourrwringmm.

oh thats enough, or i'llhave to start watching the film now

Life's a piece of ****
When you look at it
Life's a laugh and death's a joke, it's true.
You'll see it's all a show
Keep 'em laughing as you go
Just remember that the last laugh is on you.

All together now .... :D

All together now .... :D

Always look on the bright side of life *whistles*




:shake:

tis but a flesh wound

We are but eight score young blondes and brunettes, all between sixteen and nineteen and a half, cut off in this castle with no one to protect us

We are but eight score young blondes and brunettes, all between sixteen and nineteen and a half, cut off in this castle with no one to protect us
And we hide but the most intimate of womanly treasures which we shall only uncover for the one, the unspoilt, for this treasure is but our exquisitely refined little feet, fine like the sharpest dagger, cute like the cutest baby, sweet smelling and tasting like the purest honey. Come, come thou, oh great one, oh lord of the feet worshippers, come drink from the delicious fountain of feet and twinkle toes, so that you may become spoilt once again... :clown: :clown: :love:

the black night scene is my fave :smokin: :D

And the Lord spake, saying, "First shalt thou take out the Holy Pin. Then shalt thou count to three, no more, no less. Three shall be the number thou shalt count, and the number of the counting shall be three. Four shalt thou not count, neither count thou two, excepting that thou then proceed to three. Five is right out. Once the number three, being the third number, be reached, then lobbest thou thy Holy Hand Grenade of Antioch towards thy foe, who, being naughty in my sight, shall snuff it.


one........two........five!

No, three!

I was going to do the Rabbit scene from The Holy Grail but it's too long :(

So many classic lines.


There are some who call me...........................................Tim

Can't remember the exact quote but....

"Are you the People's Front of Judea?"

"Fv<k off, we're the Judean People's Front!"

He is the messiah!
No he's not, he's a very naughty boy!