マルティネス鳥（カンムリ・マイナ）の性別を知るには？3つのDNA検査方法

The Crested Myna, also known as the “Martínez bird” in some regions, is a smart and vocal bird that’s become a favorite among pet owners and breeders. One common question is: how do you know if your bird is male or female? In this guide, you’ll learn reliable ways to determine a Crested Myna’s gender — from traditional observations to modern DNA testing methods.

1. What Kind of Bird Is the Crested Myna (Martínez Bird)?

The Crested Myna belongs to the Sturnidae family, under the Acridotheres genus. Other birds in this family include:

• Common Starling (Sturnus vulgaris)
• Hill Myna (Gracula religiosa)
• Javan Myna (Acridotheres javanicus)

Crested Mynas are medium-sized birds with a shiny black body, a white patch on the wings, and a raised feather crest on the forehead.

2. Traditional Ways to Identify Gender (Visual Clues) for Martínez Bird

Here are some clues that have been used to guess the gender of Crested Mynas (Martínez Bird):

Method	Likely Male Traits	Likely Female Traits
Body Size	Slightly larger	Slightly smaller
Behavior	More vocal, aggressive	Quieter, passive
Crest Shape	Longer and spikier	Smoother
Mimicking Ability	More advanced	Less advanced (but not always)

However, these clues are often unreliable. Many females mimic well and may be just as loud or assertive as males.

3. Why Visual Methods Are Often Inaccurate

Visual gender identification is often wrong — with error rates as high as 30–50%. Age, hormones, and environment can affect how a bird behaves, so DNA testing is strongly recommended for accuracy.

4. DNA-Based Gender Testing: The Reliable Method

Modern DNA testing can determine whether your bird is genetically male (ZZ) or female (ZW) with over 99.9% accuracy.

🧬 How DNA Gender Testing Works:

1. Collect a sample: Feather or blood
2. Send to a lab: Using a test kit
3. Receive results: In 2–5 business days

✅ Benefits:

• Safe, stress-free for your bird
• Works on chicks and adults
• Non-invasive and affordable

👉 Order a Bird DNA Gender Test Kit

👉 View Our Bird Gender Testing Services

5. Types of DNA Testing Methods

There are different molecular techniques used in bird gender determination:

Method	Description	Best For
PCR	Standard DNA amplification	Most bird owners
RT-PCR	Real-time PCR for faster results	Veterinary labs, clinics
Sequencing	DNA sequence analysis of sex chromosomes	Research, rare species

6. Can You Build a Home Lab for DNA Testing?

It’s technically possible, but not practical for most bird owners. Here’s what you’d need:

• Mini PCR Machine
• DNA Extraction Kit
• Gel Electrophoresis Setup
• Primers (specific to ZW/ZZ genes)
• Micropipettes and safety gear

⚠️ Estimated cost: $1,000–$3,000+. For most people, it’s better to use a professional service.

✅ Get a DNA Test Kit Instead

Final Thoughts

If you want to determine the gender of your Crested Myna (Martínez bird) with confidence, skip the guesswork:

• Traditional methods = unreliable
• DNA testing = >99.9% accurate
• Easy to do from home with a kit