Poor tiny Birdie has no house. But Birdie does have friends. Spike, Queenie, Goldie, and Fidget want to help Birdie find a house of his own.

Birdie needs a house that isn't too tall and isn't too thin, that isn't too short and isn't too fat, and that isn't too wide and isn't too narrow. Will they find a house for Birdie before the rain falls and the wind blows?

A sweet and simple story about helping out a friend explains the math concept of capacity -- what will fit in a container of a particular shape and size.


可憐的小鳥柏蒂沒有房子可以住，但好朋友願意幫他一把。好朋友史派克，昆妮，戈地和費傑希望幫助柏蒂找到自己的房子。

柏蒂需要的房子，不用太高、太薄、太矮、太胖、太寬、或太窄。好朋友能替柏蒂在下雨或颳風之前找到房子嗎？

本書是一篇溫馨而簡單的助人故事，透過內容教導小朋友數學概念——例如知道什麼東西能夠裝進一個特定形狀和大小的容器。