But why is it so important that she used a wooden bird as a murder weapon? Well, because that wooden bird belonged to Judy’s son. While Judy forgives Jen for killing Steve, that connection immediately incriminates both of them.

Luckily enough, they eventually recover the bird before anyone else can and burn it to ashes. However, they were being watched as they burnt the murder weapon by Agent Glenn. While Jen and Judy might be “free” from their husbands, the rest of their life is catching up with them, as well as their consequences.

Source: https://www.distractify.com/p/dead-to-me-bird-figurine-meaning