Label an envelope or zip-lock plastic bag for each of the birds that are to be sexed. The label should show some form of identification e.g. Ring Number L31, Sammy, etc.

Print this Form. Complete the form with all the requested information regarding the birds that are to be sexed. (click for PDF version)
2 wing or tail feathers should be pulled from each bird.
If you must submit body feathers, please submit at least 5; we prefer to have tail or wing feathers.
Pull firmly and quickly and place the feathers into the envelope or bag. Please ensure feathers are pulled from the bird and not picked up from the ground.
Post the bags/envelopes to us with the completed printed Form .
Feathers, Sample Form and payment should all be posted to us
A DNA sexing card will be issued for each of the birds
DNA SOLUTIONS
16 Hanover Square
Mayfair
London
W1S 1HT
UNITED KINGDOM
£13 each (for sending us 1 - 3 bird samples)
£12 each (for sending us 4 or more bird samples)
Instructions and forms also available in high res. document by clicking this link.