Here are a few options for a WordPress post tag description, with varying levels of detail, designed for the tag “台灣常見鳥類” (Taiwan Common Birds) in Traditional Chinese:

**Option 1: Concise & Clear**

> 台灣常見的鳥類及牠們的資訊。 (Taiwan’s common birds and their information.)

**Option 2: Slightly More Descriptive**

> 探索在台灣經常能看到的各種鳥類。包括牠們的外觀、習性、棲息地等，讓你更了解這個美麗島嶼的鳥類世界。(Explore various birds often seen in Taiwan. Including their appearance, habits, habitats, etc., to deepen your understanding of this beautiful island’s avian world.)

**Option 3: Including Importance (Suitable for a birdwatching website)**

> 認識台灣常見的鳥類，提升你的賞鳥知識。包含各類鳥種介紹、辨識技巧，以及牠們在台灣生態中的重要性。(Get to know Taiwan’s common birds and improve your birdwatching knowledge. Includes introductions to various bird species, identification techniques, and their importance in Taiwan’s ecosystem.)

**Option 4: Focused on Beginners**

> 為賞鳥新手量身打造，介紹台灣容易觀察到的鳥類。從基礎知識開始，輕鬆踏入賞鳥的世界。(Tailored for beginner birdwatchers, introducing easily observed birds in Taiwan. Start with basic knowledge and easily step into the world of birdwatching.)

**Key Considerations When Choosing:**

* **Target Audience:** Who is this tag for? Beginners? Experienced birdwatchers?
* **Website Content:** Does the description align with the overall tone and style of your website?
* **SEO:** While tag descriptions aren’t a primary SEO factor, you can include relevant keywords like “賞鳥” (birdwatching) or “鳥種介紹” (introduction of bird species) if they fit.

**Recommendation:**

I recommend **Option 2** if you want a good balance of informativeness and brevity. **Option 3** is excellent if you’re focused on birdwatching enthusiasts. Choose the option that best suits the purpose of your website.