What the bird… #1: House Sparrow
Even though they seem abundant, their number is declining. If sparrow parents feed their fledglings too much bread instead of chewy protein in forms of caterpillars and insects, the little ones don’t survive.
Even sparrows are important for our biodiversity. An evident story is the one from China: Mao thought that sparrows eat too much corn or rice on the fields. They handed out money for dead sparrows and soon millions of them were killed. But the missing birds did not only eat no rice but also no insects and soon there was a plague of locusts, followed by a famine.
For a long time I didn’t know that there is more than one sparrow. The field sparrow and the italian sparrow do look very similar. More next time.
More information; http://www.vogelwarte.ch/house-sparrow.html