diff --git a/bird.c b/bird.c
new file mode 100644
index 0000000..bc345fa
--- /dev/null
+++ b/bird.c
@@ -0,0 +1,100 @@
+#define __LIBRARY__
+#include<stdio.h>
+#include<unistd.h>
+#include<stdlib.h>
+#include<errno.h>
+#include<time.h>
+#include<linux/tty.h>
+#define vga_graph_memstart 0xA0000
+#define vga_graph_memsize 64000
+#define cursor_side 6
+#define vga_width 320
+#define vga_height 200
+
+#define BIRD_X 120
+#define BIRD_Y 100
+#define BIRD_WIDTH 10
+#define BIRD_HEIGHT 8
+#define MAX 40
+
+char *p;
+int i,j,x_pos,y_pos,k;
+struct message *msg;
+int cnt;
+int bird_y;
+int px[MAX];
+int py[MAX];
+int h[MAX];
+char *pp;
+int ii,jj;
+int nn;
+
+_syscall0(int,init_graphics)
+_syscall1(int,get_message,struct message * ,msg)
+_syscall3(int,repaint,int ,x,int ,y,int ,h)
+int main()
+{
+	x_pos=20;
+	y_pos=20;
+	bird_y=BIRD_Y;
+	init_graphics();
+	px[0]=BIRD_X;
+	py[0]=bird_y;
+	h[0]=BIRD_HEIGHT;
+	cnt=30;
+	for(i=1;i<cnt;i++)
+	{
+		if(i%2==0)	
+		{
+		px[i]=120+20*i;
+		py[i]=0;
+		h[i]=90+i*2;
+		}
+		else
+		{
+		px[i]=30+20*i;
+		h[i]=h[i-1]-13*i%17;
+		py[i]=200-1-h[i];
+		}
+	}
+	msg=NULL;
+	nn=50;
+	while(--nn)
+	{
+		repaint(px[0],py[0],h[0]);
+		for(i=1;i<cnt;i++)
+		{
+		px[i]-=20;
+		repaint(px[i],py[i],h[i]);
+		}
+		k=3;
+		while(k>0)
+		{
+			--k;
+			get_message(msg);
+			if(msg!=NULL)py[0]-=10;
+			sleep(2);
+		}
+		sleep(4);
+		for(k=1;k<cnt;k++)
+		{
+			if(k%2==0)
+			if(px[0]+6>px[k] && px[0]+6<px[k]+10 && py[0]<h[k])
+		{
+			repaint(44,44,44);
+			return 0;
+		}else{
+		if(px[0]+6>px[k] && px[0]+6<px[k]+10 && py[0]+6+h[k]>199)
+		{
+				repaint(44,44,44);
+				return 0;
+
+		}
+		}
+
+		}		
+	}
+repaint(44,44,44);
+return 0;
+}
+