Seagulls are a common bird species found near coastal regions and bodies of water. While they may be admired for their graceful flight and majestic appearance, they can cause significant problems when they become pests. Seagulls are known for their aggressive behavior, loud calls, and unsanitary droppings. Seagulls can cause significant problems when they become pests, because they may attack humans, especially if they feel threatened or are protecting their young.