Siviter, who turned 19 last month, was himself out on loan last season, making 21 appearances for Stafford Rangers in the Northern Premier League.BCFC
Hungerford play in the National League South, the sixth tier of English football.
The Berkshire club has been a familiar one for young Blues players, with Michael Luyambula, Josh Martin and Tommy Anderson all featuring on loan for them during the 2018/19 campaign.
Earlier this month Luyambula went out on loan again, this time to League Two Crawley Town. And another Blues stopper – Zach Jeacock joined National League North side Gloucester City on a season-long loan.
Siviter, who turned 19 last month, was himself out on loan last season, making 21 appearances for Stafford Rangers in the Northern Premier League – the third level in the non-league pyramid – and was voted their Player of the Month for March 2019.
Earlier this month, Blues took up the one-year contract option on Siviter.
There is a recall option after 28 days and Siviter will still be eligible for Blues non first team fixtures.