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Wildlife Nesting Material

Spotting and dealing with nests

Identifying animal nests in the attic or crawlspace is a clear indication of an established wildlife infestation. Most animals use insulation for nesting, but occasionally rodent nests (from mice or rats) are made of shredded paper or fabric in the home. In contrast, squirrel nests are typically larger and constructed from leaves, twigs, or other plant matter.

Look for bird nests in eaves, chimneys, or attics, and for bat colonies, the presence of guano (droppings) is usually the main sign near the entry point and roosting site. Nests found in wall voids or ceilings require immediate attention. It’s important to distinguish between active nests vs. abandoned nests and be aware of seasonal nesting patterns (like spring or fall). For safety, avoid handling nests on your own, especially with bare hands.

Count on the pros at Black Diamond to remove and clean up animal nests safely using protective equipment to avoid exposure to parasites and pathogens associated with nesting materials.

Birds on the chimney

Before Their Nest Costs You a Nest Egg

Nests are a clear sign of an established infestation and carry dangerous parasites and pathogens. Don’t risk costly exposure, Black Diamond’s certified pros use protective equipment for safe removal and complete attic sanitation.
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  • How to identify animal nests in attic or crawlspace

  • Shredded paper or fabric in home — signs of rodents

  • Nesting materials left by squirrels or mice

  • What animals make nests in wall voids or ceilings?

  • How to remove and clean up animal nests safely

By Animal Type:

  • Rodent nests — shredded paper or fabric

  • Squirrel nests — leaves or plant matter

  • Bird nests in eaves, chimneys, or attics

  • Bat colonies — guano and nesting signs

By Location:

  • Attic, crawlspace, walls, or roofline

  • Hidden corners or inside furniture or cabinets

By Situation / Frequency:

  • Active nests vs. abandoned nests

  • Seasonal nesting patterns (spring/fall)