Tree Swallow

Tree Swallows Tachycineta bicolor have arrived after migrating from southern USA or Mexico where they spend winter. This bird showed off his iridescent dark blue feathers while taking a rest on a branch over the pond.  Tree Swallows feed on flying insects that they catch on the wing.

mallard

Female Mallard frolicking on the water?  Not a frolic -- she was having a bath.  Standing on a submerged rock, she dipped her bill and dabbed her feathers with water.  Later she swam to the shore and tidied herself on the sunny grass.  Ducks such as Mallards (Anas platyrhynchos) have a preen gland that produces oil. Using the bill, they smooth their feathers and spread the preen oil to condition them.  All birds need to maintain their plumage . . .  re-position feathers, interlock feather barbules that have become separated, and remove parasites from their body or plumage.

Hooded Merganser defending territory

Hooded Mergansers have been visiting the pond to dive and feed underwater.  Some days, two pairs show up; there seems to be room for all of them on the pond. But when a bachelor shows up by himself, and swims too close to a female, the paired males signal him to go away.

muskrat tail

The muskrats are nocturnal; we usually see them around the pond later in the day. 
Muskrats use their tails as rudders to steer themselves in the water and for a little extra propulsion.
Their tails have scales instead of fur.  A muskrat tail is long, thin, and roundish, flattened side to side.
Muskrats use their tails as rudders to steer themselves in the water and for a little extra propulsion.

Blue-winged Teal

Blue-winged Teal are also dabbling ducks, but smaller than the Mallards we frequently see on the pond.

They eat vegetation and grains, but in nesting season look for aquatic insects and larvae, crustaceans, clams, and snails.

This male was accompanied by a female and she wandered into the reeds to feed there.

spring thaw

The pond is thawed out, except for a bit of ice on the edges in the morning.  The mallards dabble close to shore, or rest and preen on last year's dried vegetation.  Occasionally, a few Canada Geese drop in to see what's up on the pond.  Mostly, they wander around on the boulevard grass, honking at one another.

Goldfinches - one of two annual molts

American Goldfinches (Spinus tristis) are changing into their springtime molt, from drab to brilliant.  They are among the few birds that refresh their feathers twice a year.  In spring, they shed all except the wing and tail feathers.  This is how they change to bright yellow for mating season.  After nesting in summer, they prepare for surviving winter by molting all feathers.  

foursome for lunch

We've seen a pair of Hooded Mergansers on the pond each day at various times.
This time,  two pairs find lunch on the pond. 

They come and go, so probably making the rounds of all the underwater buffets. 

We are looking forward to nesting season; this species usually look for a cavity to lay their eggs.

turtle pile

Painted turtles have come out of hibernation.  They spent the winter in burrows dug into the mud at the bottom of the pond.  They can hibernate without oxygen for months. 

Now that the pond is warming up, they are emerging again.  They find a sunny spot to absorb the heat.

bufflehead

Buffleheads Bucephala albeola, small diving ducks, are migrating through Minnesota now.  They nest north of here, so I assume these  two males stopped today for rest and food.  The pond is a perfect place for a respite on a cold snowy day. Maybe they found it warmer under the surface; they seemed to stay under for 12-15 seconds. Judging from the geese and other ducks feeding here, the Buffleheads must be finding nourishment as they dive in the pond.  I was trying for a photo of both, but they were constantly diving again, and too quick for me.