If you heard this word somewhere, it's possible it was:
* A misspelling of "fledgling": This word describes something young and inexperienced, often used for birds that are learning to fly.
* A made-up word with a specific meaning: Perhaps it's a term used in a particular context, like a game or a fantasy novel.
To understand the meaning, you'll need more information about where you encountered the word.
Could you tell me more about the context in which you heard "fudgling"?