Present participle; Past participle - birding - birded Present - bird - bird - birds - bird - bird - bird Past - birded - birded - birded - birded - birded - birded Future - will bird - will bird - will bird - will bird - will bird - will bird Present conditional - would bird - would bird - would bird - would bird - would bird - would bird Present Perfect - have birded - have birded - has birded - have birded - have birded - have birded Past Perfect - had birded - had birded - had birded - had birded - had birded - had birded Future Perfect - will have birded - will have birded - will have birded - will have birded - will have birded - will have birded Past conditional - would have birded - would have birded - would have birded - would have birded - would have birded - would have birded Imperative - - - bird - - - - - - - -