Keen Sight. Zephyr has advantage on Wisdom (Perception) checks that rely on sight.

Falconer’s Bond. Zephyr acts on your initiative and follows commands.

Avian Agility. Zephyr can take the Dash, Dodge, or Harry action as a bonus action on its turn.

Falconer Commands (No Action Required)

• Scout: Your bird flies ahead to find enemies or track a target.

• Perch: It sits at a high point and alerts you of danger.

• Tail: It secretly follows an enemy and reports back.

• Fetch & Deliver: It picks up small objects.

• Hunt: It can gather food for you and an ally.

Actions

Beak (Signature Attack). Melee Weapon Attack: +4 + PB to hit, reach 5 ft., one target.
Hit: 1d8+ PB +1 piercing damage.

Ferocity Actions

Your Blood Hawk builds Ferocity in combat. At the start of its turn, its Ferocity increases by 1d4 + the number of hostile creatures within 5 feet of it. You can command your hawk to spend Ferocity to use the following abilities:

• 1st Level: Distracting Attack (2 Ferocity).
  The hawk makes a signature attack. On a hit, the attack deals its normal effects, and the next attack made against the target before the start of the hawk’s next turn has advantage.

• 3rd Level: Swooping Attack (5 Ferocity). 
  Hit (1d20+ 6), Damage (1d8+3)
  The hawk moves up to its full speed without provoking opportunity attacks. During or at the end of this move, it makes a signature attack. On a hit, the target must make a Strength saving throw (DC = 8 + PB + your Wisdom modifier) or drop one item they are holding.

• 5th Level: Storm of Talons (8 Ferocity).
  The hawk moves up to its speed without provoking opportunity attacks, then targets one creature within 5 feet. The target makes a Dexterity saving throw (DC = 10 + PB).

• Failure: The target takes PBd10 slashing damage and is blinded until the end of the hawk’s next turn.

• Success: The target takes half damage and is not blinded.

Rampage Mechanic

If your blood hawk’s Ferocity reaches 10 or higher, it must make a Wisdom (Animal Handling) check (DC = 5 + Ferocity) at the start of its turn.

• Success: It acts normally.

• Failure: It enters a Rampage, attacking the nearest creature (ally or enemy)

Harrier (Bonus Action). A creature is marked as Zephyr’s quarry for 1 minute. Once per turn, when Zephyr attacks her quarry, she deals extra damage equal to a Harrier Die (1d4 at level 3, increasing +1 as you level up).

• If quarry is reduced to 0 HP, can mark a new quarry without spending another use.
• Harrier can be used the number of times equal to Wisdom modifier (minimum 1), and you regain all uses after a long rest.

Harry (Reaction). When a creature within 30 feet of Zephyr attacks you or an ally, Zephyr can use its reaction to move half its speed and harass them. The target must make a DEX saving throw (DC = 8 + PB + WIS modifier) or suffer disadvantage on their attacks that turn and take 1d6 piercing damage. If the target is concentrating on a spell, they must also make a DC 10 concentration check or lose concentration.

Swoop In (1/Long Rest). When you are hit by an attack and Zephyr is within 30 feet, Zephyr can move to intercept the attack. If it ends its movement within 5 feet of you, Zephyr takes the hit instead, reducing the damage by half.