Espathra do not fly or climb trees, so their chicks, Flittle, can not rely on their parents to keep them safe in a well-protected nest. Flittle remain in the air purely through the strength of their own willpower, and do a far better job of it than Natu or many of their avian counterparts, for their tiny, light body consists almost entirely of brain mass with which to focus their will.

People from Paldea are accustomed to watching Flittle fluttering around the trees, or blown high into the air by strong winds. For this reason, they often fail to realize that Flittle are not actually capable of true flight, only gliding and levitation. More than one introductory text for children has been recalled, to the immense embarrassment of its author, for describing this bird as a flying pokemon.

Flittle cherish fluttering through the air, and evolution for them is the process of accepting a land-bound destiny in exchange for power; if Flittle had a branched evolution like Applin or Gloom, Espathra would go all but extinct within a single generation. "Losing one's wings" has become a powerful metaphor for the diminished possibilities of adulthood, especially among those unhappy with their lives, and even more sober scientists often think of Flittle's evolution as a dramatic metamorphosis on par with a Caterpie's or a Magikarp's.

Yet Espathra, in reality, has larger and more distinct (if less aerodynamic) wings than the Flittle, and the long-lived, late-evolving Flittle only evolve once they have exhausted the possibilities of their basic form. Furthermore, both the strong psychic power and the intimate knowledge of wind currents developed as a Flittle will continue to serve these pokemon well long after evolution; Espathra do not run so fast on the strength of their legs alone!