This kind of thing is an example of the very best that the internet has to offer. We should be using it to really study-- second best thing to first hand-- the world around us!
I love nest / den cams!
Hummingbird Nest WebCam (as of 3-21 no eggs left, no babies)
Barn Owl Nest (as of 3-21 one baby has hatched)
Barn Owl 2 (as of 3-21 these guys have hatched and are LOUD)