Birds: Clean: Sparrow
Source: TTT
Leviticus 14:4
the priest shall order that two live clean birds, cedar wood, scarlet yarn, and hyssop be brought for the one to be cleansed.
Matthew 10:29–31
Are not two sparrows sold for a penny? Yet not one of them will fall to the ground apart from the will of your Father. / And even the very hairs of your head are all numbered. / So do not be afraid; you are worth more than many sparrows.