AF Speed Test of Tamron 150-600mm

As seen on YouTube video,this lens work well even though i wanna test speed so did in past 15days but didn't get succeed because of i can not hold the lens properly for long time and during moving toward the subject,i mostly missed the shots.
so today i went with tripod and norming taking shots of swimming duck,heron and ibis.after 2hours i noticed that the ruddy shelduck is coming to water and tried to focus in Aperture-Priority Mode but i missed flying shots due to my tripod so i lift the tripod with camera and focused the duck.but Ruddy Shelduck was started to land on water though i clicked 5shots and here is result.
Don't know why i stopped clicking coz my 600D will click 6-7 click in continuous shooting mode, may be due to weight of lens and camera is lifted with tripod.
anyway enjoy this images for this time and set back for next images for AF Speed Test of Tamron 150-600mm.

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Canon 600D
Aperture-Priority AE Mode
f /8 || Shutter speed 1/800 || ISO 250 ||
Tamron 150-600mm

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Canon 600D
Aperture-Priority AE Mode
f /8 || Shutter speed 1/1000 || ISO 400 ||
Tamron 150-600mm

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Canon 600D
Aperture-Priority AE Mode
f /8 || Shutter speed 1/800 || ISO 320 ||
Tamron 150-600mm

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Canon 600D
Aperture-Priority AE Mode
f /8 || Shutter speed 1/1000 || ISO 320 ||
Tamron 150-600mm

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Canon 600D
Aperture-Priority AE Mode
f /8 || Shutter speed 1/1000 || ISO 320 ||
Tamron 150-600mm

ps:
1. camera settings are Aperture-Priority Mode, f/9, auto iso, picture style was portrait,auto white balance,continuous shooting style,spot metering mode and picture quality was RAW
2. all images are cropped to 40%
3.Handheld