A soldier who is required to perform menial work on the grounds of a military base.(noun)
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Use "yardbird" in a sentence
"Near the end of the book you will find a helpful section of tips on safety and grill maintenance, as well as a list of barbecue terms that will get you grilling and gabbing like a pro turning yardbird with a pig tail."
"Tahar Rahim's novice yardbird has been plunged will transform him from wide-eyed ingénu into brutalised maître de criminalité."
"The chicken may not be man's best friend, but this yardbird was quite special."