Why did he say "Al Yipol Dami Artzah"?
Radak: My blood will always stand in front of Hashem to take vengeance for me as if my blood was spilled, for every day I am in danger of my blood.
Malbim: Now that I decided to go to Chutz la'Aretz, my blood will not spill and you cannot kill me.
What is "ha'Korei"?
Rashi: It is the name of a bird (partridge) - "Korei Dagar v'Lo Yalad" (Yirmeyah 17:11).
Malbim: It is the one who calls [on the mountain, i.e. myself].
What is the meaning of "Yirdof ha'Korei"?
Rashi: It pursues [nests of other birds and sits on their eggs].
Radak citing Targum Yonasan: It is pursued.
Why did he compare this to chasing a flea?
Malbim: It jumps from place to place.