A Song Sparrow singing in Boston may ... almost rushed in comparison to the more leisurely songs of the rural birds. Audio clips and spectrograms – visual representations of sounds – are used to ...
One of the last birds new to science to be found in North America, the Rufous-winged Sparrow was discovered in 1872 at Tucson. It was common there into the 1880s, but then disappeared for half a ...
Seeing a white-crowned sparrow is always a joy when they visit a bird feeder. In fact, I would say seeing any sparrow other than a house sparrow at a feeder is a joy. White-crowned sparrows are ...
In every case the Italians were using illegal high-quality bird-sound playback equipment and ... and feathers of cuckoos and hoopoes and a sparrow hawk, the sack was bulging, the oriole crying ...
Songs and calls are used as a vital form of communication between birds, to defend territories, attract mates, keep in contact with family members, and more. No natural sound is more varied and ...