In "The Scarlet Ibis," what is the theme of most of the lies and what does it tell you about Doodle?

There are several themes that evolve during this
outstanding short story, but I'm not sure that Doodle's lies pertain to any one
particular theme. The theme of brotherhood is an obvious
one, and one of his lies deals with the family living together in the swamp. Doodle's
brother is also torn between the emotions of love and
pride, while another theme is that of the
difference found in some people. However, most of Doodle's
tall tales seem to stem from his wild imagination and his love of the outdoors. His tail
of the peacock that spreads his wings to engulf the
boy

like a
closing go-to-sleep flower, burying him in the glorious iridescent, rustling
vortex...

foreshadows the
ibis which appears before the family. Doodle's other lies, about living together in the
swamp and marrying his mama, shows that the little boy desperately wants to cling to his
family as long as he can.