我們的首要任務

現在就趁復活節,做這個有關蛋的小測驗

快來做這小測驗,認識大自然當中一些奇妙的蛋。記得按右邊的答案欄,對一對答案。

A nest with 3 dickcissel eggs and 4 cowbird eggs.
Eggs-traordinary Three dickcissel eggs and four brown-headed cowbird eggs in a pasture. © Chris Helzer/The Nature Conservancy