Mastering Claw Curvature Measurement Technique
Measuring Claw Curvature
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Measuring Claw Curvature
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Try the technique on a few of the following claws. You can add lines
here in this file, but I don’t think you can get PowerPoint to give you
an angle. Hold your protractor up to the screen to get the angle.
Pileated Woodpecker
Ignore the Plasticine –
it’s just supporting the claw.
Common Eider
Ignore the Plasticine –
it’s just supporting the claw.
Greater Black-backed Gull
Great Blue Heron
Learn how to measure claw curvature using a step-by-step technique involving drawing chords, perpendicular lines, and measuring angles with a protractor. Practice the method on various bird claws such as Belted Kingfisher, Atlantic Puffin, Common Eider, Greater Black-backed Gull, and Great Blue Heron. Utilize the provided images and detailed instructions for accurate measurements.
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Presentation Transcript
Measuring Claw Curvature Step 1. Draw chord AB from the tip of the claw (A) to the anterior margin of the tubercle at the base of the phalanx (B). C Step 2. Draw chord CD half way between A and B, and perpendicular to chord AB. B A D
Step 3. Draw in chords AX and XB. E C Step 4. Perpendiculars are drawn to bisect AX (EE ) and XB (E E ). Note that they must cross each other (at E). X E B D A E
Step 5. Draw the final two chords AE and E B. E C Step 6. With a protractor, measure the angle between AE and E B. X E B D A E
Try the technique on a few of the following claws. You can add lines here in this file, but I don t think you can get PowerPoint to give you an angle. Hold your protractor up to the screen to get the angle. Pileated Woodpecker
Belted Kingfisher Atlantic Puffin
Ignore the Plasticine it s just supporting the claw. Common Eider
Greater Black-backed Gull Ignore the Plasticine it s just supporting the claw. Great Blue Heron
