You're speaking with Dr. Michael Salkin. Welcome to JustAnswer. I'm currently typing up my reply.
Jane, I'm hopeful that this fledgling is just a glutton. I can't think of anything else that enlarges the crop of a 2 week old. We do see certain crop disorders at its age, however. Candidiasis is most common and predisposed in birds immunocompromised by age, prolonged antibiotic use, concurrent immunosuppressive conditions (e.g., debilitation, psittacine beak and feather disease, malnutrition), poor hygiene in the bird's environment and food preparation; failure to cean excess formula from the skin or mouth of hand-reared chicks; highs concentrations of sugar in fruit and hand-rearing formula providing an optimal medium for the growth of yeast; and alkaline crop contents seen when crop stasis (paralysis) occurs for other reasons, encouraging yeast overgrowth. Please respond with further questions or concerns if you wish.
Thank you for the additional information. Do you detect a "sour"/unpleasant odor coming from its crop?
Good. Let's simply "watchful wait" and see what, if anything, develops. There's a good chance that what you're seeing is within normal limits. I can't set a follow-up in this venue so please return to our conversation - even after rating - with an update at your convenience. You can bookmark this page for ease of return.
You're quite welcome. Thank you for your kind accept. I appreciate it.