Thank you in advance to anyone who can help me!! I am a first time chicken owner so all of this is new to me! I have White Leghorn chickens, my rooster has a large black mark/cut/sore and some of my hens have very similar but smaller markings on them as well. I have included pictures below of my rooster and one of my hens (sorry they are not the best quality). If anyone has any idea of what this could be and what to do please let me know!