Mystery Egg

Found this little egg pierced by a stick in my backyard as I was hanging my hammock this weekend.

This little egg is so beautiful, and so sad, and so interesting all at the same time... the mystery remains: how do you think this happened? Your guess is as good as mine

so far here are the going theories:
1. the egg was pierced by a crow (they use things as tools)
2. the egg shell was soft and it must have fallen and bisected on a small branch and the baby bird inside stopped the fall and thus the shell now remains half cut in half on the stick

Personally I just don't know. Theory #1 seems odd to me, interesting though, but why wouldn't the crow just use his beak. Theory #2 is also interesting, but improbable as the egg would have had to hit the stick in a very particular way to bisect so perfectly. Personally I think I must have mini monkeys in my trees outside. Or the loud blue jays that mock me in the early morning with their songs, they must be getting crafty and breaking the other birds eggs.

I think Myth Busters might have to perform some experiments to see if a soft robbin's egg falling could actually bisect on a branch :)