As you know i am using Peli-Kiera theme, when i wanted to add a favicon i found that it was not working.

A comparison with another theme gave me the solution.

The differents steps are :

• In you folder content, create a folder 'images'.
• Put your favicon file in this new folder.

• In your configuration file, pelicanconf.py, add the following line.

  FAVICON = 'images/favicon.ico'
  

• In the base.html file, add the following lines just before </head>.

  {# Favicons are a touchy subject. For reasoning for the following code, see: http://stackoverflow.com/a/23851464/872397 #}
     {% if FAVICON %}
     <link href="{{ SITEURL }}/{{ FAVICON }}" rel="icon">
     {% endif %}
     {% if FAVICON_IE %}
     <!--[if IE]><link rel="shortcut icon" href="{{ SITEURL }}/{{ FAVICON_IE }}"><![endif]-->
     {% endif %} 
  

• Rebuild your blog.