and traveling long distances. But it also has high costs: it consumes huge amounts of energy and limits body size and weight. A bird that doesn’t fly conserves energy, so it may be able to survive on a scarcer or less nutrient-rich foo...
and stowaway rodents to islands. these animals often prey on flightless birds and can drive them to extinction. in new zealand, stoats introduced by european settlers have threatened many native species of flightless bird. some have gone extinct whil...
Some have gone extinct while others are endangered.So in spite of the energy-saving advantagesof flightlessness, many flightless bird species haveonly a short run before going the way of the dodo.But a few flightless birds have survived onmainlands alongside predators aplenty.Unlike most small ...