M4 had a female in his territory

M4 had a female in his territory the other day. In this case, it was hard to tell which was male or female as the one that I thought was M4 was very calm and didn't mind me, which the killdeer I didn't know was going crazy, hiding, yelling, screaming. It's very possible that the one I thought was M4 and had posted about earlier was actually a regular female visitor to his territory. When I first got there, M4 began to hide.

Sorry for the blur on these photos.

You can't see me, but I've got my eye on you!

Equivalent to Bo Derek in 10 for killdeers. Hmm, looks suspiciously like the one I thought was M4 earlier

Females can be picky about who they mate with

OK, now that I'm way over here, I want to tell you to stop looking at my girlfriend! I think this is the real M4 because he is the one doing the territorial displays and the most yelling, but I could have them reversed.

This was the only killdeer I saw the next time, making territorial calls, but acting like good old Mr. Cool this time. Looks like he's been roughed up a bit.

I don't know what happened to the female after that as it's been a couple of days and I haven't seen her.