Birds nesting in an underground parkade could have been locked in when the parkade was converted to a campus bike centre with doors on the end. The swallows quickly learned how to trigger the motion detectors to open the doors and go in and out whenever they want. Smart birds!We humans think we are brighter than we often are, take @wotsit4 for example. Likewise animals are a lot brighter than we often give them credit for.
The Story Behind my Gall Bladder Removal
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