Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 5 · Omens
शकुनानि
विशन्ति येन मार्गेण वायसा बहवः पुरम् ।तेन मार्गेण रुद्धस्य पुरस्य ग्रहणं भवेत् ॥ १ ॥
In the full Agni Purana this is chapter 232, verse 1.
By whatever road many crows enter a city, by that road a besieged city will be taken.
Simple meaning: If many crows enter a besieged city by one road, the city will be taken by that road.
सेनायां यदि वा सार्थे निविष्टो वायसो रुदन् ।
A crying, trembling crow on the left in an army or a caravan tells of great fear.
छायाङ्गवाहनोपानच्छत्रवस्त्रादिकुट्टने ।
A crow pecking at a traveler's shadow, shoes or umbrella is a death sign. Honouring it brings good.
प्रोषितागमकृत्काकः कुर्वन्द्वारि गतागतम् ।
A crow going to and fro at the door tells that someone away will return. Red or burnt things tell of fire.