A new study warns that the last remaining habitat for several endangered bird species in Europe could reduce by up to 50 per cent in the next century as farmers convert land to more profitable crops and meet increased demand for products such as olive oil and wine.
Ornithologists say that community science bird data shows different trends in bird populations than professional bird surveys do, especially in developing countries. Researchers look for trends to know whether the number of individuals in a species is increasing, stable or decreasing -- with the latter as a warning sign that the species is in trouble. […]
