"
‘Places for Girls’, White Arkitekter’s research project into inclusive public spaces was kick-started by some unsettling statistics from predominantly gender-equal Sweden: while use of play spaces may be equally split across genders in the younger age groups, in park space planned for teenagers a disturbing disparity begins to emerge, with use among young people reflecting an 80/20 boy-girl gender imbalance, and youth club spaces exhibiting a similar split of 70/30. "
open-city.org.uk/blog/why-do-girls-use-playgrounds-less-than-boys
'During the study period, 2,712 children were observed, and 43.5% were girls (Table 2). Among girls, 50.4% were categorized in the 0 to 5 years age group, followed by 39.2% in the 6 to 12 years age group and 10.3% in the 13 to 18 years age group. Among boys, the 6 to 12 years age group was most frequently observed (42.3%) followed by 36.6% for the 0 to 5 years age group and 21.1% for the 13 to 18 years age group.
...
Examination of the fixed effects indicated that significant variation existed in thresholds (intercepts) across all park activity areas between sedentary activity and vigorous activity (intercept 1) but not between sedentary and walking (intercept 2) ( Table 3). Controlling for predictor variables, girls across all park activity areas were equally likely to be observed sedentary as they were to be observed walking (moderate intensity activities).'
www.cdc.gov/pcd/issues/2015/14_0532.htm
70 percent of girls (and 44 percent of boys) believe it is not wise to try and share spaces already occupied by older boys, thus foregoing any attempts at participation. 82 percent of girls (and 47 percent of boys) who did make relevant attempts were turned away. In the case of girls acts of rejection were often accompanied by sexual insults, as well as threatened or actual sexual aggression.
www.wien.gv.at/english/administration/gendermainstreaming/examples/parks.html
I could go on. Girls aren't using parks. Their use falls off in every country that has studied the issue.
The girls who want to play sports find themselves being excluded by the boys. The girls who would rather do something else find themselves excluded through lack of provision.
If we want more girls to participate in sports, they need to feel welcome. They clearly currently don't feel like parks are spaces for them.