This is the Destiny: The Dark Below Bounty locations guide that helps you find the total of 3 Bounty locations for the PS3, PS4, Xbox 360 & Xbox One open world first-person shooter Destiny Expansion 1: The Dark Below DLC.
Here you see the locations for all 3 Bounties. Play Patrol Mode on Earth and follow the video instructions to the Eyes, Heart & Hand of Crota:
The timeline for all these in-game Bounty locations is listed below.
Destiny: The Dark Below Bounty Locations Guide
Timeline in minutes for the above Bounty Locations Guide:
• [00:06] — Bounty Location #1: The “Heart of Crota” can be found in the Refinery.
– Objective: Patrol the Refinery in Cosmodrome. Defeat the Servant of the Heart to lure out its master.
– Eros quote: “As long as the Heart beats, the blood of Crota will flow across the face of all you hold dear.”
• [01:54] — Bounty Location #2: The “Hand of Crota” can be found in the Lunar Complex.
– Objective: Patrol the Lunar Complex in Cosmodrome. Seek out the Servant of the Hand to lure out its master.
– Eros quote: “The Hand of Crota is a brutal enforcer. Hunt him in the dark corridors where you first encountered the Hive.”
• [03:10] — Bounty Location #3: The “Eyes of Crota” can be found if you continue from the Hand of Crota and go to the Terrestrial Complex.
– Objective: Patrol the Terrestrial Complex in the Cosmodrome. Steal the Servant’s treasure and lure out his masters.
– Eros quote: “The Eyes of Crota gather secrets for their master. Lure them out where the last array blossomed.”
How to find the new Bounties?: The new “The Dark Below” DLC has a series of sidequests with unmarked objectives to find hidden around Earth, all through Patrol. You unlock the 3 Bounties after completing the “Kill 25 Knights / Wizards” Bounty from Eris Morn.
How to unlock the weekly Nightfall and Heroic Strike missions?: Then go to the Refinery, Lunar Complex, and Terrestrial Complex to obtain the Eye of Crota, Heart of Crota, and Hand of Crota Bounties. Which is how you unlock the new weekly Nightfall and Heroic Strike missions.
Tip: You complete all new Bounties by playing Patrol Mode on Earth.
Where to find all Bounty in Destiny: The Dark Below? The in-game locations for the Bounties are described in this detailed video guide with handy voice-over tips.
The Bounty are listed in the video in the order that they appear normally.
– Hand of Crota Location at 0:26
– Eyes of Crota Location at 1:24
– Heart of Crota Location at 3:08
There you go! All Bounties in Destiny: The Dark Below are yours to find! 
Credits: Special thanks to 360GameTV& NextGenWalkthroughs for the guide videos and tips.