Langsung saja saya beritau caranya:
1. login ke akun blogger anda
2. klik rancangan
3. lalu pilih elemen laman
4. tambah gadget
5. klik HTML/Java Script
6. copy dan paste kode berikut
<script type="text/javascript" src="http://imemovaz.googlecode.com/files/tripleflap.js"></script>
<script type="text/javascript">
var birdSprite="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjoDa5k8t9tYaYj5G0AXu47u-FjIVGtoIbYHUS2GyspMW1vS1XeJ7q4WEkWS2koKgbLD3_z69hVRV0mXJJwFtISn1Pv_EagiyJxv7tDuWX4d0SPYJ2jT5TIJNXTaxdcxtZRFgZlkh6hbcw/s1600/birdsprite+copy+copy.png"; var targetElems=new Array("img","hr","table","td","div","input","textarea","button","select","ul","ol","li","h1","h2","h3","h4","p","code","object","a","b","strong","span"); var twitterAccount = "http://twitter.com/namatwitter";var tweetThisText = "Twitter - namatwitterhttps://twitter.com/namatwitter/";tripleflapInit();</script>
7. Klik Save
kemudian lihat apa yang terjadi dengan blog anda



Mantap gan bisa dicoba langsung, ijin copas buat kodenya.