If this is "Spring", I'd hate to see what the weather was like before March 20th. Perhaps the groundhog packed it in for good when he heard the sad news about Rick Moranis. I don't know. I am no more an expert on Whistle-pigs than I am on Templetons. What's a shadow, anyway, but an area [which] direct light from a light source cannot reach due to obstruction by an object? An object like, say, a rebus? QED.
I am only vaguely familiar with the concept of rebuses, and had forgotten about them completely-- having years ago watched some Concentration re-runs as a wee latchkey kid-- until recently when the godless snow-harpy savaged my travel plans and I found myself watching Jeopardy! in a strange bed amidst the foulest of humours.
"Things that almost sort of rhyme with the 'beetus if you're kind of dumb for $400, Alex."
"It's one of those things that looks like this -->"
... and I haven't trimmed my nails since. I don't suppose these will be too difficult for the regulars, but perhaps little black boxes for Gavin Floyd, etc.? Please, please add your own, and don't be intimidated by my cultivated graphic arts abilities. The program I used is called "Paint," but you can get by with something less sophisticated. Know that your worst effort can't be less fulfilling than pitch-framing analysis.
Hawkism Bonus Round