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Deleted member 66627
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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.
Does this help?
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.
Does this help?
D
Deleted member 66627
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DONT YOU KNOW?!
HUMAN DOMINATION!
HUMAN DOMINATION!
RUNOFFSTAGE
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Human domination ... With that cute face? ;D
RUNOFFSTAGE
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Was THAT really necessary? 
Lord Doctor
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Few. I'm safe then!
Human domination? I know I've asked before, but are you sure you're not
The Rani?
RUNOFFSTAGE
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If she is, what would that mean for us?
D
Deleted member 66627
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RUNOFF.........Have I ever told you how much I hate you? <3
Ven.......Did you know that one actually left me speechless? 😱
Doc......Whoooooo????
Ven.......Did you know that one actually left me speechless? 😱
Doc......Whoooooo????
D
Deleted member 66627
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Did you know I try not to let it happen often? 
Lord Doctor
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Does this answer your question?
Chemist, Time Lady, etc etc. Unorthodox sense of humour
Did you know I try not to let it happen often?
Do you know that I can fully believe that?
D
Deleted member 66627
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Did you know if I looked like that I would maim myself on a daily basis?
Lord Doctor
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Or perhaps, you might regenerate?
D
Deleted member 66627
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Did you know that 987595890380953578 Facelifts will do that to ya?
Lord Doctor
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Did you know she can only do that 12 times?
D
Deleted member 66627
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Wheres the proof of that statement??
RUNOFFSTAGE
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Have you seen Michael Jackson sometime?
