Now state wildlife officials say development has destroyed so much natural habitat that the birds are disappearing.
Rich populations of humans living comfortable lives destroy habitat around them.
Poor populations of humans struggling for survival destroy habitat around them.
Poor fishing practices can also harm other wildlife and even destroy entire habitats.
The increasing amount of development on the coast is destroying natural marine and coastal habitats.
Currently, the rapidly growing problems, including tourism and a human population explosion, are further destroying habitats.
This led to soil erosion and destroyed natural habitats.
"If anything is destroying native habitat, it is the wild horses."
At one time, mountain bluebird numbers were threatened because of increased agricultural activities destroying habitats.
For example, some real estate developers are being required to pay a fee for destroying habitat.