What is the most reliable physical characteristic to check when attempting to sex a kestrel?

Answer

Focusing on the primary feather color of the wing.

Differentiating the sexes relies heavily on the contrasting colors of the wings: blue-gray for the male versus rusty-brown for the female, which is visible even if the wings are only slightly spread.

What is the most reliable physical characteristic to check when attempting to sex a kestrel?

#Videos

How to Identify Male and Female Common Kestrels - YouTube

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