Increase your Dexterity score by 2, and one other ability score by 1.

You can communicate fully with the animals with who you share a species. You are proficient in Animal Handling those species.

As a bonus action, you break cover and become a swarm of whatever type of animal comprises your body. You gain a number of benefits while this condition is active.

• You gain a flying or a burrowing speed equal to your walking speed. If neither is appropriate for the type of animal, your walking speed increases by 10 feet. Choose this when you select this race.
• All equipment that you were wearing or holding drops to the ground in the square you occupied when you changed forms. You may pick up items that weigh less than 5 pounds as an action.
• You gain +2 to your unequipped armor class.
• The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a Tiny creature that makes up your body. 
• Your unarmed strikes deal 1d6 piercing damage and you may use your Dexterity modifier to calculate the attack and damage rolls.
• You are immune to the grappled condition.
• You cannot cast or concentrate on spells in this form.

This form can be held for an unlimited amount of time. Resuming your humanoid form takes one minute to perform.