"PAPA": Anti-Predator Automatic Doorman

<p><strong>Creation 2014-06-30 : System description</strong></p><p>For those of you who understand French, &quot;PAPA&quot; (&quot;Daddy&quot;) stands for &quot;Portier Anti Prédateurs Automatique&quot;.</p><p>In other words, &quot;let your hens sleep quietly, Daddy is watchful&quot;</p>