WATER is THE Critical Nutrient, especially in this FRIGID weather.
 
Dehydration, the lack of water, kills quicker than starvation.
 
Help your visitors to your yard and farms.
 
Make sure there is free-flowing water available.
 
Here is my front yard, just before I added water to the containers this morning, maybe it will give you some ideas:
My bowls are on the ground, on dark mats (to help absorb what sun gets to them).
I only half fill the bowls twice a day – makes it easier for me to flip out the ice chunks.
Those ice chunks on the grass are from late yesterday afternoon.
I use cold tap water: hot water actually freezes faster than cold water!
The “bowls” are metal pans, clay bowls and ceramic ones – different birds like different styles.
Once the water is drinkable, twice a day, then also check your feeders to make sure the seeds are flowing and the suet is accessible.
BTW the above advice about water goes for dogs, cats, horses and, of course humans.  Let’s help all we can.

4 year-old bald eagle watching an osprey across the cove

osprey determined to get his fish to his mate

trio of red-breasted mergansers

lead bird is an immature male, called an eclipse phase

second bird is a mature female and the last bird is a mature male

close-up of the mature male red-breasted merganser

the red-breasted merganser trio taking flight

double-crested cormorant resplendent in its green black body and neck, accented by the bronze of its wings

the small trees and tall bushes edging the lake in many areas are full of the sweet calls of the song sparrows