Fiachra is crafty, quick with her bow, and a keeper of many eyes.
Yes, those birds are watching you, and yes, that Dunlending you are seeing is out to get you.
If you are in the Riddermark, perhaps she is scouting out your land to tell the wild men where to go. If you have any plot where a vengeance-driven Dunlending would help make things interesting let me know! Fi will be glad for the chance to bring glory to her people.
"Regiments of black crows are flying over all the land between the Mountains and the Greyflood and they have passed over Hollin. They are not natives here; they are crebain out of Fangorn and Dunland. I do not know what they are about: possibly there is some trouble away south from which they are fleeing; but I think they are spying out the land."