var type = "Red",
    attack = function() {
        typeOfBird = type + " Bird";

        window.message = typeOfBird + " Attacks!";

        return typeOfBird + " Bird Attacks!";
    };

console.log( window.type );       // I'm a global variable
console.log( window.attack() );     // I'm a global function
console.log( window.typeOfBird ); // I'm a global variable too :(
console.log( window.message );    // I'm a global variable too :|