Flightless bird that require a significant amount of overall metabolic energy, ratites decrease their basal metabolic rate and conserve energy. A study looking at the basal rates of birds found a significant correlation between low basal rate and pectoral muscle mass in kiwis. On the contrary, flightless penguins exude an intermediate basal rate. This is likely because penguins have well-developed pectoral muscles for hunting and diving in the water. For ground feeding birds, a cursorial lifestyle is more economical and allows for easier access to dietary requirements. Flying birds have different wing and feather structures that make flying easier, while flightless birds'
Pre-1970 Southern Hemisphere tropical cyclone seasons Pre-1970 Southern Hemisphere tropical cyclone seasons The Pre-1970 Southern Hemisphere tropical cyclone seasons ran year-round from July 1 to June 30, reaching their peaks mid-February to early March. For storms in the South-West Indian Ocean, see here. The Banda Islands were hit in March. The cyclone blew the roof off of almost every house and killed 85% of nutmeg trees. A tropical cyclone hit the Banda Islands. A cyclone hit the island of Roti in April, killing 75 and destroying many homes. Around this time, a tropical cyclone hit the Kei Islands, uprooting many trees. On 20 April 1872, a