Here are a few options for the description of a WordPress post_tag titled “候鳥” (Hòu niǎo – Migratory Birds) in Traditional Chinese, catering to different focuses:

**Option 1: Simple & Descriptive (Focus on the subject matter)**

> 候鳥：描述隨著季節變遷而遷徙的鳥類。牠們的旅程跨越數千公里，追逐食物和適合繁殖的環境。了解牠們的故事，欣賞牠們的壯麗。
>
> *(Hòu niǎo: Miáoshù suízhe jìjié biànqiān ér qiānxǐ de niǎolèi. Tāmen de lǚchéng kuàyuè shùqiān gōnglǐ, zhuīzhú shíwù hé shìhé fánzhí de huánjìng. Liǎojiě tāmen de gùshì, xiǎngshang tāmen de zhuànglì.)*
>
> *Translation: Migratory Birds: Describes birds that migrate with seasonal changes. Their journeys span thousands of kilometers, in pursuit of food and suitable breeding environments. Learn their stories and appreciate their splendor.*

**Option 2: Emphasizing Nature & Conservation**

> 候鳥：探索候鳥的奧秘及其與環境的關係。關注牠們在遷徙路徑上的挑戰，例如棲息地喪失和氣候變遷。了解如何幫助保護這些美麗的鳥類。
>
> *(Hòu niǎo: Tànsuǒ hòu niǎo de àomì jí qí yǔ huánjìng de guānxì. Guānzhù tāmen zài qiānxǐ lùjìng shàng de tiǎozhàn, lìrú qīxīdì sàngshī hé qìhòu biànqiān. Liǎojiě rúhé bāngzhù bǎohù zhèxiē měilì de niǎolèi.)*
>
> *Translation: Migratory Birds: Explore the mysteries of migratory birds and their relationship with the environment. Focus on their challenges along migration routes, such as habitat loss and climate change. Understand how to help protect these beautiful birds.*

**Option 3: Broad & Inclusive (for general content)**

> 候鳥：探索關於候鳥的各種文章和資訊，包括牠們的種類、行為、遷徙路線，以及與生態環境的互動。
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> *(Hòu niǎo: Tànsuǒ guānyú hòu niǎo de gèzhǒng wénzhāng hé zīxùn, bāokuò tāmen de zhǒnglèi, xíngwéi, qiānxǐ lùxiàn, yǐjí yǔ shēngtài huánjìng de hùdòng.)*
>
> *Translation: Migratory Birds: Explore various articles and information about migratory birds, including their species, behaviors, migration routes, and interaction with the ecological environment.*

**Option 4: Focused on a Specific Aspect (e.g., Photography)**

> 候鳥：分享以候鳥為主題的攝影作品、觀察記錄和相關知識。捕捉牠們飛翔的瞬間，感受大自然的壯麗。
>
> *(Hòu niǎo: Fēnxiǎng yǐ hòu niǎo wèi zhǔtí de shèyǐng zuòpǐn, guānchá jìlù hé xiāngguān zhīshi. Bǔzhuō tāmen fēixiáng de shùnjiān, gǎnshòu dàzìrán de zhuànglì.)*
>
> *Translation: Migratory Birds: Share photography, observation records, and related knowledge themed around migratory birds. Capture their flying moments and experience the grandeur of nature.*

**Tips for Choosing the Best Description:**

* **Consider your Content:** Which option aligns best with the overall content of your blog or website?
* **Keywords:** Make sure the description includes relevant keywords (e.g., 遷徙, 鳥類, 生態, 攝影) to help with search engine optimization (SEO).
* **Target Audience:** Tailor the language to appeal to your expected readership.
* **Brevity:** WordPress tag descriptions are often displayed with limited space, so keep them concise and to the point.

Choose the option that best suits your needs and feel free to adapt it to fit your specific content!