It had to Bee you

A bit of a mystery today.  I found some very small downy white feathers tipped with black on the lawn this morning, which I can't identify but suspect were left by a marauding Sparrowhawk.  Then after lunch I spotted a cluster of creamy coloured feathers tipped with pale grey, which I can only think came from a Nuthatch.  I think I may be providing a family of Sparrowhawks with a varied menu.  I do hope not. 

Will it be an Olympus Pen or an Olympus EM10?  I need to find a comparision between these two and an equivalent Panasonic mirrorless camera.

In case you hadn't guessed, this is a bee.