The Grey-headed chickadee found in the far north of Yukon and Alaska was listed as endangered this month, and experts say the bird is so rare that it's hard to estimate its numbers.
With the gradual increase in global warming, we should not be surprised to see changes in bird migration patterns, a decline in the number of bird species, and an increase in rare bird sightings.
With the gradual increase in global warming, we should not be surprised to see changes in bird migration patterns, a decline in the number of bird species, and an increase in rare bird sightings.
With the gradual increase in global warming, we should not be surprised to see changes in bird migration patterns, a decline in the number of bird species, and an increase in rare bird sightings.
With the gradual increase in global warming, we should not be surprised to see changes in bird migration patterns, a decline in the number of bird species, and an increase in rare bird sightings.