Gender bias on Wikipedia reflects the fact that a dominant majority of volunteer Wikipedia editors, particularly on the English-language site, are male. This has led to Wikipedia having fewer and less extensive articles about women or topics important to women.
It figures among the most frequent criticisms of Wikipedia, and part of a more general criticism about systemic bias in Wikipedia. The Wikimedia Foundation, which runs Wikipedia, agrees with these criticisms and has made an ongoing attempt to increase female editorship of Wikipedia.
Edit-a-thons have been held to encourage female editors and increase the coverage of women's topics.
...90% are male...
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The "vast majority of (Wikipedia) editors are young, college-educated males", a demographic which has been described as "a bunch of male geeks who are wealthy enough to afford a $2,000 laptop and a broadband connection". Surveys have indicated that between 8.5% and 16% of Wikipedia editors are female. Consequently, Wikipedia has been criticized by some academics and journalists for having primarily male contributors, and for having fewer and less extensive articles about women or topics important to women.
Not to mention that roosters get their timing off.
Nothing like early morning confused cocks to set off a bad day. :)