Board Position
A standard though unpopular flank opening sometimes called the Dutch Attack by its analogy with the Dutch Defence (ie. White playing the Dutch with a move in hand), but named after English player Henry Bird (1830-1908) because of his consistent adoption of it from 1873 onwards.
If White's 1.P-KB4 (move 1, left) is left unchallenged White usually goes on to fianchetto his queen's bishop in a mirror-position of the English Opening, but it is more often countered by From's Gambit (1..P-K4) against which White's transposition into the King's Gambit is probably the best answer.

Begin or Clear or Groups or see move: 1 f4 to:

Schlechter Var: 1..d5 2 e3 Nf6 3 Nf3 Bg4 4 Be2 Bxf3 5 Bxf3 Nbd7 6 c4 e6 7 cxd5 exd5 8 Nc3 c6 9 0-0 Be7
Positional Var: 1..Nf6 2 Nf3 g6 3 b3 Bg7 4 Bb2 d5 5 e3 0-0