The male bird has a differently shaped head.

雄鸟的头形有点特别。

《牛津词典》

Fascinating frog with a distinctive pyramid-shaped head.

这种蟾蜍是蛙类家族的一个另类成员，头部呈金字塔形，很容易分辨。

youdao

The evolution of the odd shaped head has long puzzled scientists and many reasons such as manoeuvrability, smell and inbuilt "sonar" have been tested.

长期以来，科学家们一直对这种奇异头型的进化感到费解，已经测试了各种原因，比如其灵活性、嗅觉和内置“声纳”。

youdao

And besides that, he had a good shaped head for being bald.

FORBES: Scientists Discover a Possible Key to Reversing Baldness

Besides the top-of-the-line specs, these new workhorses give gamers the chance to personalize their paint jobs through a "revolutionary painting process" that may help you forget that your tower isn't shaped like the head of an alien.

ENGADGET: Commodore unveils boutique gaming rigs at CeBIT

It fits around the head like a headpiece with the pear-shaped diamonds slightly raised and sparkling above her head.

FORBES: The Princess of Monaco's Sea-Inspired Tiara