Prepare two sheet pans with parchment paper (to transfer easily to the refrigerator later), or place a sheet parchment paper on your counter top before beginning.
In a microwave safe bowl, add butterscotch chips and peanut butter. Microwave in 30 second increments, stirring until melted and smooth. Alternatively, melt over a double boiler on the stove top.
In a separate bowl, combine chow mein noodles and coconut flakes. Add butterscotch mixture and stir until evenly coated.
Working quickly (your mixture will solidify within about 10 minutes), spoon mixture in heaping mounds on your prepared parchment paper (about 2-3 tablespoons per mound). Form into a round shape and hollow out the center to make space for your eggs. Top each mound with 2 to 3 eggs while butterscotch is still wet.
Allow to dry for 1 hour at room temperature, or transfer to the refrigerator for 15 minutes to allow candies to set.
Once prepared, your candy mixture will harden quickly - it is important to have your working surface prepared before beginning.
If possible, acquire a second person to add your robin's eggs while you continue to form the nests.
Candies will keep for up to two weeks in a sealed container at room temperature or in the refrigerator.
If your home temperature is very warm, you may prefer to store these candies in the refrigerator to prevent melting.