Had one dead bird in front of your house then 3 backyard is this mean something bad?

It is not uncommon to find dead animals in your yard, including birds, particularly during the spring and fall migration seasons when many birds pass through your area. There is no evidence that finding a particular number of dead birds in your yard signifies bad luck or bears any deeper meaning. These situations are most often the result of natural causes, such as illness or predation, and have no mystical significance.