chXout® is a trusted, dedicated provider of a reliable and accurate bird sexing service through DNA analysis for breeders and pet owners alike.

Bird gender determination was the very first service to be offered by chXout® when our rural idyll fortuitously led us to the sexing of peregrine falcons.

Knowing a birds sex can be important for breeding and health but also the management and conservation of avian wildlife. For a range of species and most hatchlings, gender determination from physical appearance is extremely difficult. 

 DNA analysis is a quick and reliable solution for determining whether a bird is male or female. The test is based on the amplification of W and Z chromosomes of the birds. Female birds carry one of each chromosome (ZW), while males carry two Z chromosomes (ZZ).

Bird Sexing

 Bird sexing is achieved through DNA analysis of the following suitable sample submission types:

For more information on suitable sample submissions types and their collection, please visit our Sample Submissions page.

How does it work?

Why choose chXout?

  • We have processed thousands of samples for a wide range of species (Bird Species List).
  • We are UK based only, so by contacting us you will be dealing with UK based customer service and laboratories. We will never send your samples to other laboratories or overseas. 
  • Your results are available in 2-3 working days.
  • Quality assured DNA tests.
  • If we do not achieve a result the first time, we will repeat the experiment free of charge.
  • A professional and personal service.
  • Your final report is issued in a PDF format which is easy to download and print.

DNA testing benefits for bird sexing

  • Bird sexing DNA tests can be carried out for birds of any age.
  • The birds are not subject to the stress of transport.
  • Egg shell membrane sampling is non-invasive
  • The service is available year round (out of the main breeding season, there may be slight changes to extraction dates and turnaround times).
  • Gender can be determined for monomorphic birds where it is not possible to determine sex visually.
  • Knowing the sex of a bird from a young age through testing of the egg shell membrane can be beneficial for understanding more about their health and behaviour and also for breeding purposes.



3 working day turnaround

(incl. VAT)


2 working day turnaround

(incl. VAT)


1 working day turnaround

(incl. VAT)


Please note: During bird season (April-July), the day the samples arrive at our laboratory is considered “day 0”. As an example, if we received samples on a Thursday for a 3 working day turnaround:

Bird Sexing

Outside of bird season (1 August to 1 April), DNA extraction will take place on Tuesday every week, with results due on the following Friday. This will be at the regular service price of £22 (incl. VAT).

If you have any queries at all, please do not hesitate to contact us.

Bird Sexing Forms

Media Coverage

The Times found our story interesting! You can read all about it here:

Paternity-test firm finds new prey in Gulf