Where I work has this great, peaceful courtyard. The only way in an out is via the access doors located in the building or from above.
This female Mallard duck pictured below decided this was an ideal location to set and hatch her eggs. Now from a predator standpoint she couldn't have picked a safer location. However, from a food and water standpoint I question her decision making, as there's none.
She hatched eight adorable little duckling. The courtyard was essentially turned into a fishbowl for the employees who would line the windows to catch a glimpse of the mother duck and babies waddling around.
Food and water have been provided, so for now they're doing just fine.