The video is being made. Until it arrives, here is what it will say (119 words, about 60 seconds):

Here's Miss Bellamy's class at the window. A robin built a nest in the tree outside, and this week four chicks hatched.

Every chick will grow a red chest, like its parents. Nobody will show them how. And still, no two chicks will look exactly the same.

So how does a chick get its parents' red chest? And why does each chick look a little different?

In this topic, we will look at how to match a young one to its parent, what parents pass to their young, why brothers and sisters differ, and how food and soil change how a living thing grows.

Okay, so are you ready to find out what parents pass on to their young?

It ends with a ready line. Then pick a reply below — any reply counts.