A jackdaw is a little blackbird that is noted for being noisy and scavenging for food. It is usually an indicator of impending difficulties and annoyances in a dream. A jackdaw on the roof is thought to presage a new arrival in certain cultures.
Conversely, a jackdaw sitting on the top of a home or flying down a chimney is a portent of death, and coming across one is considered a terrible omen. It is thought that a jackdaw perched on the vanes of a cathedral tower foretells rain.
If you see one fly by or land and fly away in your dreams, it means that you will have some difficulties or be defeated in your quest.
On the other hand, if you catch a jackdaw, it means that you will overcome the calamities that the jackdaw brings, and your quest will be a success after all.