There were a few more signs of spring this mornng as I walked our dog Coby:

A male cardinal was doing a half-hearted territory call in the top of a tall tamarac tree.  Guess he has to get his vocal cords in shape.

Several chickadees were doing their territory calls, staking out patches of woods along our walk route.

Two crows, most likely a mating pair, were perched side by side in a tall tree.

A pair of red-tailed hawks were doing acrobatics together.   At the end of the routine, the female flew down low behind the trees.  Next the male did a stall  maneuver and then dove straight down into the area where the female disappeared.  My guess is this was a courtship ritual.