It’s unusual to spot the grey-headed canary-flycatcher in Delhi-NCR during this time of the year. However, a recent sighting of the species, in a sprawling and serene forest in Bhondsi — a city in Haryana state of India — off Sohna Road, has sent a frisson of excitement through the birding community.
Birds sing from the heart. While other four-limbed animals like mammals and reptiles make sounds with voiceboxes in their throats, birds' chirps originate in a unique vocal organ called the syrinx, located in their chests.
When it comes to powered animal flight, bats have always seemed to come second to birds. But scientists who flew a plane to track the flight of Brazilian free-tailed bats have clocked these winged mammals flying at speeds rivaling those of the fastest birds.