Why 3 billion Birds Have Lost in North America?

Colorful bird, painted bunting for illustration

Scary facts showed that billion birds lost in North America during last 50 years. The number around 3 billion birds.

Of 529 species, 19 bird species lost around 50 million for each species, as reported by Cornell university recently.

Examples of species lost are following:

- red-winged blackbird

- dark-eyed junco

- sparrows

- European starling

- warblers,

- blackbirds

- finches.

- meadowlarks

- horned larks

- red-winged blackbirds

- thrushes

- swallows

Carolina chickadee as illustration

The question then, Why 3 billion Birds Have Lost in North America? The answer is combination factors, but mostly relate to:

- decreasing of bird habitats

- using of pesticides that killed insects as food sources for birds

- eaten by predators such as wild cats

- accident like glass collisions

- climate changes

Habitat is great important for birds, not only to live, but also to find food, rest and raise the chicks.

Loss of habitats mainly due to agricultural expansion, and might also because of property and industry development, especially in sub urban areas.

Now, my wonder about reduction of bird population in my backyard is getting answer. 6 years ago, I saw a quite lot of birds.

In the last few years or this year around, especially during spring season, I just see couple of hummingbirds, and I did not see any woodpeckers at all.

How about you? Do you aware that less birds in your backyard or any where else?