The kittens were tiny when they figured out how jump up on the outside ledge, to remove one glass slat and then the screen to break into my bathroom window. I have somehow lost the video, but here are some stills I took. Enterprising. The four of them worked together to get the job done. (Click on first photo to enlarge all.)

Play along by posting a link to your favorite Cat in the Window photo below in comments.  Here is another one from me, plus links to  others who have posted to this prompt today: 

https://photographyocd.com/2017/03/23/contentment-and-catnaps/
https://ceenphotography.com/2019/04/11/cat-in-the-window-challenge-for-april/
https://mwsrwritings.com/2019/04/11/cat-in-the-window-challenge-accepted/
https://bushboy.blog/2019/04/12/cat-in-the-window/
https://marlaonthemove.com/2019/04/11/cat-in-the-window/
https://citysonnet.wordpress.com/2019/04/12/cat-8/#jp-carousel-19037

Challenge is for the entire month of April.