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On January 5, 2008, the United States first celebrated National Bird Day. National Bird Day celebrates “the beauty, song, and flight of birds,” as well as their role as indicators of ecosystem health.
 
Nearly 12% of birds are endangered or threatened species. Parrots and songbirds are especially at risk, mostly due to loss of habitat and a reduction in food resources due to development.
 
Many birds are also at risk by human habitation—crashing into clear glass windows and sliding doors. The best ways to reduce the risk of bird collisions involve making the glass less reflective: putting up vinyl decals, covering the window in a bug screen, installing frosted or etched windows, or using sun shades or awnings to reduce glare.
celebrate
Verb

to observe or mark an important event with public and private ceremonies or festivities.

collision
Noun

crash.

development
Noun

construction or preparation of land for housing, industry, or agriculture.

Noun

community and interactions of living and nonliving things in an area.

endanger
Verb

to put at risk.

Noun

material, usually of plant or animal origin, that living organisms use to obtain nutrients.

Noun

environment where an organism lives throughout the year or for shorter periods of time.

habitation
Noun

dwelling or place where an organism lives (habitates).

indicator
Noun

sign or signal.

reduction
Noun

lowering.

reflect
Verb

to rebound or return light from a surface.

threatened species
Noun

organism that may soon become endangered.