I'm far from expert, but the first does look like some sort of magnolia.
The second (pink) looks like an azalea to me. < edit > That explains why I thought it was an azalea, probably a rhododendron < /edit >
I've got no idea about the last.

Third one might be flowering pear? Dogwood? Without leafs it's hard to say.

#1 almost looks like a camillia or related - you really need a naturalist to ID them

(a modern botanist likely won't be able to do it as they are focused on photosynthetic pathways, plant defensive compounds, yada yada)

so if you do contact Cornell ask fro the Agr. Ext. service not the botany dept. (which is like non-existent these days)

Theres an iphone app (picture this) that'll id these. It has a 7 day free trial.

First is a cherry, second a rhodie-this early likely pjm but man its big for one, and third def magnolia stellata of some hybrid. Last I can't tell.

Where is Baz?