Science facts today

* The Channel-billed Cuckoo (Scythrops novaehollandiae) is the largest species of cuckoo in the world. * Xenon is a colourless, odourless, heavy noble gas that is used in gas-discharge lamps. * Rainforest Rocket Frog is a terrestrial, diurnal frog found in Panama and Costa Rica. * A barograph is an instrument used for recording the variations in atmospheric pressure over a period of time in a paper called barogram. * Golden-headed Manakin is a small bird found in South America. It weighs about 12.5 g.