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The ______ of most birds have a large radial keel for attachment of flight muscles.

The ______ of most birds have a large radial keel for attachment of flight muscles.

زیادہ تر پرندوں میں سے ______ میں پرواز کے پٹھوں کو منسلک کرنے کے لئے ایک بہت بڑا شعاعی پیٹ ہوتا ہے۔
Explanation
  • Birds have a keeled sternum (breastbone) that provides a large surface area for the attachment of powerful flight muscles.
  • The pectoralis and supracoracoideus muscles, essential for flight, are anchored to this sternal keel.