What can cause a decrease in the squirrels population?

Several factors can lead to a decrease in squirrel populations, including habitat loss due to urban development and deforestation, which reduces their living and feeding areas. Increased predation from animals like hawks, owls, and foxes can also impact their numbers. Additionally, disease outbreaks and harsh weather conditions can significantly affect their survival rates and reproduction. Lastly, food scarcity during winter months can contribute to population declines.