The practice squad is not a particularly stable place for a player to be, and that's definitely true for the Atlanta Falcons in 2015.
The Falcons have signed S Terrance Parks to the practice squad and waived DT Ricky Havili-Heimuli and CB TJ Heath.— Atlanta Falcons (@AtlantaFalcons) December 8, 2015
The new addition here is Parks, a 25-year-old safety who got in one game with the Seahawks in 2014. The FSU product stands 6'2" and weighs in at 216 pounds, and had spent time on the Houston Texans practice squad before being released with an injury settlement in September. He'll bring a little size and physicality to the practice squad, though he's not a strong bet to do much else.
Havili-Heimuli has been with the Falcons off and on since last year, but the team has a deep, quality set of defensive tackles, and he wasn't about to crack the lineup any time soon. Heath, 28, has been on the Falcons' practice squad since November 16th.
The Falcons now have one open practice squad spot, which you should feel free to wildly speculate about.