Here are a few options for the description of a WordPress post_tag titled “常見鳥種 (Chángjiàn Niǎo Zhǒng)” in Traditional Chinese, along with their nuances:

**Option 1 (Simple and Straightforward):**

> 香港及台灣常見鳥類的分類標籤，方便您尋找相關資訊與圖片。
>
> *(Xiānggǎng jí Táiwān chángjiàn niǎo lèi de fēnlèi biāoqiān, fāngbiàn nín xúnzhǎo xiāngguān zīxùn yǔ túpiàn.)*
>
> *Translation: A category tag for commonly seen birds in Hong Kong and Taiwan, making it easy for you to find related information and pictures.*

* **Pros:** Clear, concise, and directly relevant to the topic. Mentions both Hong Kong and Taiwan, making it widely applicable.
* **Cons:** May be a bit too basic for a more nuanced understanding.

**Option 2 (Adding a bit more context):**

> 此標籤涵蓋在台灣及香港地區普遍可見的鳥類品種。無論您是觀鳥新手還是資深愛好者，都能在此找到常見鳥類的介紹、照片與相關資訊。
>
> *(Cǐ biāoqiān hánggài zài Táiwān jí Xiānggǎng dìqū pǔbiàn kějiàn de niǎo lèi pǐnzhǒng. Wúlùn nín shì guānniǎo xīnshǒu háishì zīshēn àihǎo zhě, dōu néng zài cǐ zhǎodào chángjiàn niǎo lèi de jièshào, zhàopiàn yǔ xiāngguān zīxùn.)*
>
> *Translation: This tag covers commonly seen bird species in Taiwan and Hong Kong. Whether you are a beginner birdwatcher or a seasoned enthusiast, you can find introductions, photos, and related information about common birds here.*

* **Pros:** Welcoming and inclusive, appealing to a broad audience. Provides slightly more depth and suggests expectations for the content.
* **Cons:** A little longer, but still manages to remain succinct.

**Option 3 (Focusing on practical use):**

> 透過「常見鳥種」標籤，您可以快速瀏覽台灣和香港地區常見的鳥類資訊。包括辨識方法、棲息地、鳴叫聲等，讓您更好地認識這些美麗的鳥類。
>
> *(Tōngguò 「chángjiàn niǎo zhǒng」biāoqiān, nín kěyǐ kuàisù liúlǎn Táiwān hé Xiānggǎng dìqū chángjiàn de niǎo lèi zīxùn. Bāokuò biànshí fāngfǎ, qīxīdì, míngjiào shēng děng, ràng nín gèng hǎo de rènshí zhèxiē měilì de niǎo lèi.)*
>
>*Translation: Through the “Common Bird Species” tag, you can quickly browse information on birds commonly seen in Taiwan and Hong Kong. This includes identification methods, habitats, bird songs, and more, allowing you to better understand these beautiful birds.*

* **Pros:** Highlights the practical value of the tag, including details on identification and habitat.
* **Cons:** Potentially a bit verbose, depending on the context.

**Option 4 (Short and sweet with a sense of urgency):**

> 台灣及香港常見鳥類一覽。輕鬆辨識、快速查詢！
>
> *(Táiwān jí Xiānggǎng chángjiàn niǎo lèi yī lǎn. Qīngsōng biànshí, kuàisù cháxún!)*
>
> *Translation: A quick look at common birds in Taiwan and Hong Kong. Easy identification, quick search!*

* **Pros:** Very short, catchy, and emphasizes ease of use.
* **Cons:** Less descriptive than the other options, but might be suitable if space is extremely limited.

**How to Choose:**

* **Consider the context:** How much space do you have for the description? What is the overall tone of your website or blog?
* **Target audience:** Who are you trying to reach? Are they mostly beginners or experienced birdwatchers?
* **Functionality:** Does the description benefit from highlighting specific features like identification tips or habitat information?

I recommend either **Option 1** or **Option 2** as the best balance of clarity and appeal for most cases. Choose the one that fits your style and needs! Remember to include the Traditional Chinese characters.