House Sparrow


Actual Size: Approximately 5” – 6” long

Characteristics: Brown and black stripes; black throat and sometimes chest patch; light cheeks.

Habitat: Often build nests in the Modesto CA area on building gutters, lamp poles, ledges, and more.


  • Songbirds when they’re in the wild; pests in your property.
  • Can transmit diseases that affect humans, pets, and livestock.
  • Will aggressively defend their nests, often pushing out other desirable songbird species.

House Sparrows in Modesto CA

House sparrows are one of the most abundant songbird pests in the world. They’re also an invasive species in most parts of the world, having been introduced to North America in the 19th century. Sparrows and their droppings can carry pathogens that are harmful to humans. Tough, adaptable, and aggressive, sparrows can survive in cities and rural areas equally well, forcefully evicting native birds from their nests. Sparrows build messy nests and are largely dependent on humans for both food and nesting sites. Over 25 diseases to humans, pets, and livestock can be traced back to house sparrows.

House Sparrow Habitat

House sparrows are especially attracted to man made structures because they offer safe spaces to build nests with abundant food options. Nests are made from twigs, grass, paper, and string. Gutters, vents, soffits, lamp poles, rafters, building ledges are appealing locations, but they’ll take almost any conceivable elevated, sheltered spot. Their nests also often turn into hotspots for bugs and parasites to make their way into buildings. In some areas, sparrow nests can create a fire hazard.

House Sparrow Behaviors, Threats, or Dangers

Sparrows love stuffing nesting materials into tiny gaps about 1” – 3” wide. This can mean the framework of a structure, signposts, corrugated overhangs, and even dryer vents. Gutters and drainage pipes clogged with sparrow nests often back up, which can cause extensive water damage. Nests in chimneys and vents can stifle airflow and spread diseases through the system. Sparrows will try to crowd out other birds at feeders and birdbaths, and as they aggressively defend their nests, they often push out other more desirable songbird species, such as bluebirds. If you are dealing with sparrow problems in your Modesto CA property, always contact a bird removal specialist.