WTF variation of the birds opening.


so i want to study the birds opening, and for that i play many games with that opening, note the lines my opponents play, and study them. In a lot of my gaes after 1 f4 my opponent played 1... e6. I have no idea what that mve does, but why do people play this? Is there any refutation of this defense? Thanks for your reply, Watermelon Man

so i want to study the birds opening, and for that i play many games with that opening, note the lines my opponents play, and study them. In a lot of my gaes after 1 f4 my opponent played 1... e6. I have no idea what that mve does, but why do people play this? Is there any refutation of this defense? Thanks for your reply, Watermelon Man