Saving Old Seagulls

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#include <Wire.h>
#include <LiquidCrystal_I2C.h> // Using version 1.2.1

// The LCD constructor - address shown is 0x27 - may or may not be correct for yours
// Also based on YWRobot LCM1602 IIC V1
LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);

// constants won't change. They're used here to set pin numbers:
const int buttonPin = 2;    // the number of the pushbutton pin

// Variables will change:
int buttonState;             // the current reading from the input pin
int lastButtonState = LOW;   // the previous reading from the input pin
long count = 0;

// the following variables are unsigned longs because the time, measured in
// milliseconds, will quickly become a bigger number than can be stored in an int.
unsigned long lastDebounceTime = 0;  // the last time the output pin was toggled
unsigned long debounceDelay = 10;    // the debounce time; increase if the output flickers

void setup()
{
  Serial.begin(9600);
  pinMode(buttonPin, INPUT);
  lcd.begin(16, 2); // sixteen characters across - 2 lines
  lcd.backlight();
  // first character - 1st line
  lcd.setCursor(0, 0);
  lcd.print("Rev Counter");
  // 8th character - 2nd line
  lcd.setCursor(0, 1);
  lcd.print("Count =");
}


void loop() {
  // read the state of the switch into a local variable:
  int reading = digitalRead(buttonPin);

  // check to see if you just pressed the button
  // (i.e. the input went from LOW to HIGH), and you've waited long enough
  // since the last press to ignore any noise:

  // If the switch changed, due to noise or pressing:
  if (reading != lastButtonState) {
    // reset the debouncing timer
    lastDebounceTime = millis();
  }

  if ((millis() - lastDebounceTime) > debounceDelay)
  {
    // whatever the reading is at, it's been there for longer than the debounce
    // delay, so take it as the actual current state:

    // if the button state has changed:
    if (reading != buttonState) {
      buttonState = reading;
      
      // only toggle the LED if the new button state is HIGH
      if (buttonState == HIGH) {
        count++;
      }
    }
  }
  lcd.setCursor(8, 1);
  lcd.print(count);
  Serial.println(buttonState);
  delay (20);
  // save the reading. Next time through the loop, it'll be the lastButtonState:
  lastButtonState = reading;
}