Shadow Stealth. While in dim light or darkness, the Young Deep Crow can hide as a bonus action. 

Devil's Sight. The Young Deep Crow can see through magical darkness.

Sunlight Sensitivity. While in sunlight the Young Deep Crow has disadvantage on attack rolls, as well as perception checks that rely on sight. 

Spellcasting. The Young Deep Crow is a 5th-level spellcaster. Its spellcasting ability is Charisma (spell save DC 14, +6 to hit with spell attacks). The Young Deep Crow has the following spells prepared:
Cantrips (at will): [Sapping Sting]

1st level (4 slots): [Arms of Hadar], [Bane]

2nd level (2 slots): [Blindness/Deafness], [Blur], [Darkness]

3rd level (1 slot): [Counterspell], [Dispell Magic] 

Eldritch Descent. The Young Deep Crow can descend 20ft in a straight line and make a plunging attack against a target. Each creature within 5ft of where the Young Deep Crow lands must succeed a DC 15 Dexterity Saving Throw or take 6d6 bludgeoning damage and is knocked prone. On a success the target takes half damage and is not knocked prone. The Young Deep Crow takes this damage regardless. 

Mandibles. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 12 (2d8 + 4) Piercing damage, and the target is grappled (escape DC 15). Until this grapple ends the target is restrained and the Young Deep Crow cannot use its mandibles against another target. 

Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 4) Slashing damage.