Reddit reviews Glass Hen on Nest Covered Dishes: Identification & Value Guide

Those "chickens on a dish" are a huge collector's item. You can find them in depression glass, milk glass, etc. It's as popular as a cream pitcher. Do a google search for "depression glass chicken" and look at all the images.

Or, look at eBay. "Fenton Glass Chicken"

Martha Stewart made some amazing knock-offs at one point.

Here's a book about them from John's Amazon wish list, that includes some "old school" toys.

You didn't mention that the book is 300 dollars