Krsnadas Kaviraj Goswami is saying that the mercy of Sri Caitanya Mahaprabhu is just amazing, and the more one tries to logically understand it, the more amazing it is. I like to call this verse, the open invitation to the Caitanya Caritamrta. I see this verse as an important verse because it shows us the proper attitude by which we are meant to look at the life of Lord Caitanya. We are looking at his mercy and that is what we are trying to uncover, more and more.
paśu pākhī jhure, pāṣāṇa vidare (Song: Parama Karuna by Locana Das Thakura)
It is said that the animals (paśu), the birds (pākhī), will chant, and the stones (pāṣāṇa vidare) will melt in the chanting of the holy names. Srila Vrindavan Das Thakur said that even when a bird chants the holy names of the Lord, that bird will go back to Godhead. So, although Prabhupada told us, ‘No parrot-like chanting,’ still, the parrots get the mercy when they chant!