Об­ра­зуй­те от слова POSSIBLE од­но­ко­рен­ное слово так, чтобы оно грам­ма­ти­че­ски и лек­си­че­ски со­от­вет­ство­ва­ло со­дер­жа­нию тек­ста.

It flies 1,000 km across the Gulf of Mexico to the southern coast of the United States in 24 hours without a stop! You may think it's ______ , but other small birds can fly non-⁠stop for up to 90 hours!