DNA Sexing Service
Swan DNA Sexing
Definitive male or female results for cygnets and adult swans of all species. Simple feather collection, results in your portal within 72 hours.
Order Swan DNA SexingWhy DNA Sex Your Swans?
Cygnets Are Nearly Impossible to Sex
Young swans show virtually no visual differences between males (cobs) and females (pens). Even experienced breeders cannot reliably sex cygnets by appearance alone. DNA testing gives you the definitive answer at any age.
Pairing for Life
Swans are monogamous and form lifelong pair bonds. Knowing the sex of your birds early is essential for creating compatible breeding pairs. Waiting until maturity can mean years of uncertainty and wasted space.
High-Value Birds
Swans are among the most expensive waterfowl to purchase and maintain. DNA sexing protects your investment by ensuring you have the correct sex ratios for your breeding program or estate pond stocking.
Aggression Management
Multiple cobs housed together can become extremely aggressive, especially during breeding season. Knowing the sex of your swans helps you plan housing and avoid dangerous confrontations.
Sell with Confidence
Buyers purchasing swans for ornamental ponds, parks, or breeding programs expect to know the sex. Offering DNA-verified sexing on your cygnets builds trust and justifies premium pricing.
Conservation and Wildlife Programs
Wildlife programs managing Trumpeter Swans, Tundra Swans, and other native species rely on accurate sex identification for population management and release planning without invasive procedures.
How It Works
Order Online
Select your DNA sexing test from our shop. Choose your sample type and quantity.
Collect Your Sample
Pull 3 to 5 breast or body feathers with the root (pulp) attached. No blood draw needed.
Mail to Our Lab
Send your labeled samples to our lab in Bailey, Michigan.
Get Your Results
Results appear in your online portal within 72 hours of our lab receiving the sample (weekdays).
Simple, Transparent Pricing
Per-bird pricing with no hidden fees.
DNA Sexing Test
$8/sample
Starting price per bird. Feathers, blood cards, blood vials, or eggshell samples accepted.
DNA Collection Kit
$15 to start
Everything you need to collect and mail your samples. Includes labels, bags, and instructions.
Swan Species We Test
Our DNA sexing works on all swan species, including:
99.9%
Accuracy Rate
72 hrs
Average Turnaround
500+
Breeders Trust Us
2,000+
Species Supported
Frequently Asked Questions
Can I tell the sex of a Mute Swan by its knob size?
The knob at the base of a Mute Swan’s bill is generally larger on cobs than pens, but this difference is unreliable in young birds and varies significantly between individuals. DNA testing is the only way to get a definitive answer, especially for cygnets and juveniles.
How do I safely collect feathers from a swan?
Swans are large and can be intimidating, but feather collection is straightforward during routine handling or health checks. Have a helper secure the bird while you gently pull 3 to 5 breast feathers. The process takes seconds. Alternatively, a blood card from a toenail clip during a vet visit works well.
How young can I test cygnets?
Once cygnets develop their first juvenile feathers (typically around 2 to 3 weeks), you can collect a small feather sample. For younger cygnets, a blood card from a toenail clip is a reliable alternative that does not require feather development.
Do you test Black Swans?
Yes. Black Swans are one of the hardest swan species to sex visually because both cobs and pens are nearly identical in appearance and size. Our DNA test works on all swan species worldwide.
I need to sex swans for a park or estate. Can you help with multiple birds?
Absolutely. We work with parks, estates, zoos, and wildlife programs that need to sex multiple swans. Our DNA collection kits make it easy to collect and organize samples from several birds at once.
What if my results are inconclusive?
In the rare event we cannot get a clear result (usually due to sample quality), we will notify you immediately and retest with a new sample at no additional charge.
Know Your Swans. Test Today.
Do not wait years to find out you have two cobs. DNA sex your cygnets now and plan your flock with confidence.
Order Now – Starting at $8/sampleNeed help with waterfowl genetics or breeding advice? Join The Silkie Lab Community, our members-only genetics platform for serious breeders.