The hummingbird nest cam:

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A tiny bird, nesting in a golf-ball sized nest on two eggs the size of tic-tacs.  Occasionally the bird flies off, and several thousand people eagerly look to see if the hole in one of the eggs has gotten bigger.  Or maybe mama has rotated the egg and it’s impossible to see if there’s any progress.  Or, if we’re really lucky, a tiny flicker of movement at the edge of the growing hole.