One small piece of litter may not seem like much, but even minor amounts of litter can be devastating to birds in a number of ways. Understanding how litter hurts birds can lead to more responsible trash disposal and other measures to keep the environment clean and suitable for birds and other wildlife.
Types of Litter That Hurts Birds
All types of litter can have detrimental effects on birds, though some of the most insidious trash is also some of the most common, including:
- Rotten, discarded food
- Lead-based items, such as bullet casings or fishing sinkers
- Fishing line tangles or kites string
- Discarded plastic
- Oil-based liquid litter, such as spilled motor oil
While these items may be the most dangerous, all intended litter has bad consequences for the birds.
How Litter Affects Birds
Depending on the specific type of litter, it can affect birds in several ways.
- Poisoning: Toxic litter, such as lead casings, paint chips, heavily moldy food or cigarette butts can poison birds if ingested. While small amounts of the material may not be immediately harmful, many toxic substances have cumulative effects and can cause serious illness, deformities or death over time.
- Digestive Blockage: Plastic litter, especially small, brightly colored pieces, may look irresistible to foraging birds, but it cannot be digested. Instead, it will stay in the digestive tract, blocking the passage of food and eventually starving the bird because it will not be able to eat due to the amount of plastic it has ingested.
- Injuries: Sharp shards of glass or plastic can injure birds that swallow them, cutting into the throat and causing hemorrhages. Fishing line or kite string can become wrapped around birds and cause cuts or amputations to wings, legs, feet or the neck, injuries that can prove fatal. Similarly, if these materials are used in nesting, hatchlings can be strangled or injured.
- Plumage Disruption: A bird's plumage must be precisely aligned to provide proper insulation and easy flight, and even a small amount of oil can harm a bird. Waterfowl, in particular, are susceptible to oiling that can lead to hypothermia. As birds preen to remove the oil, ingesting the toxin can also lead to poisoning.
- Habitat Loss: Heavily littered areas are unsuitable for nesting, feeding or shelter, forcing birds to seek out less desirable areas with greater competition for necessary resources. Litter can also contaminate water sources, and the polluted ground is less likely to support insects or seed- or fruit-bearing plants for food sources.
- Attracting Predators: Discarded food that is left as litter can attract predators such as rats, feral cats, and foxes that will also prey on birds or nests. Rotting litter can also give rise to bacteria that will cause illness in birds, or it may attract ticks or mites that can be detrimental pests.
How You Can Help
Thousands of birds die each year because of the effects of litter, but fortunately, even a few small steps can help protect birds. Easy ways anyone can help include:
- The Three Rs: Reduce, reuse and recycle. The less litter is produced, the less there will be to affect the birds.
- Pick Up Litter: When out for a walk, pick up litter you find, or organize a litter clean up the event as a service project.
- Dispose of Trash Properly: Always dispose of trash in closed bags that are less likely to break and scatter litter.
By understanding how litter affects birds and how to take simple steps to reduce the problems, it is possible to protect birds and provide a beautiful, litter-free environment for both wildlife and humans to enjoy.
Photo - Shell Casing Andrew Barden