How does bluebirds eggs get broken and in the grass?

Bluebird eggs typically do not get broken and end up in the grass. Bluebirds are cavity nesters and build their nests in tree cavities or nest boxes. Their eggs are also well-protected within the nest, reducing the chances of breakage. If you observe broken bluebird eggs or eggs on the ground, they may have been the result of predators trying to reach the nest, extreme weather conditions that could dislodge the nest, or human interference. To ensure the safety of bluebird nests and eggs, providing suitable nest boxes, predator guards, and monitoring the nesting sites is essential.