The crows make an appearance in every Resident Evil game except for Resident Evil: Code Veronica X, however the crows are not aggressive in Resident Evil 4. They are crows who have been infected with the T-Virus. The crows main form of attack is pecking the player, and they can also slash the player with their razor-sharp talons.
The creatures can be killed with one shot of any weapon, so if evading is impossible the handgun is your best option.
Related ThreadsTHE CROW Reboot Release Date - Comics - last post by @ Mar 3, 2018
The Crow (remake) - last post by @ May 6, 2013
See JASON MOMOA as THE CROW - last post by @ Jun 4, 2018
JASON MOMOA & Director Exit Sony's THE CROW Reboot - Report - last post by @ May 31, 2018
Crows in Re4 - last post by @ Feb 6, 2006