|Silhouettes or decorations of almost any kind can help make birds aware of glass windows, specially if placed 4 or so inches from each other.|
Many people love birds and try to their best to help them out. This often takes the form of providing bird feeders, but there are much better ways. Planting native plants actually provides much better food (and cover) than setting out seeds. Since 97% of our terrestrial birds (and all our bats by the way) feed on insects, and native plants result in over 4 times the number of insects, this is truly best way to provide nourishment. Indeed, experiments done locally have shown that yards with nonnative plants cannot support as many birds even with bird feeders around. Baby birds have been found in yards landscaped with nonnative plants dying with crops full of seed, since what they really need is the protein and other nutrients insects and other invertebrates provide. Even birds such as hummingbirds and finches which are known to feed on nectar and seeds respectively need to have insects to feed their young. They cannot fledge successfully with out them.
|Insects, specially caterpillars which feed on native plants, make up 97% of the food for terrestrial birds, particularly while young. Look at how many caterpillars this Common Grackle is taking back to feed its young.|
But there are many other ways to make your homes more bird friendly. Some are quite obvious such as keeping cats indoors for the protection of both the pet and birds. But another way to make your yard safer for birds is to try and keep birds from colliding with windows.
Many people are familiar with the dark hawk silhouettes that have been used on windows to try and keep birds from colliding with them. Some believe this is due to birds being afraid of the hawk shape on the glass. In reality, that's not the reason these efforts reduce bird strikes. Any shape that helps make the surface standout works just as well. Many window decorations can therefore be used to reduce bird crashes. In some nature centers I've worked at, we would change the window decorations seasonally. Whether colored leaves in the fall or winter snow flake shapes attached to the outside of the glass were used, they all helped keep birds from accidentally smashing into the glass. The best results are when the shapes are placed 4 or so inches from each other.
So go ahead and be more bird friendly. Plant native plants, keep cats indoors, and do what you can to make your windows safer. Whether you install window screens, close your shades, or attach some decorations to the outside glass, all can help reduce bird collisions.