Whether one receives lashes for violating this law: Makkot 16a, 17a
No matter how many times the bird returns, one must send her away again: Bava Metzia 31a
Meriting a Reward of Long Life for fulfilling this Mitzvah: Kiddushin 40a
Not attributing this Mitzvah exclusively to Gd's Mercy: Megillah 25a
This law does not apply to animals: Keritot 21a