Wood ducks appear in the oxidation ponds in April.

The northern pintail is "considered by many to be the most elegant of all our ducks" (Burton and Anderson).

A rare sighting for me of an immature black-crowned night heron.

The hyperactive snowy egrets, whomove around looking for prey, have yellow feet and a black bill while the great egrets have black feet and a yellow bill.

The adult Black-crowned night heron in breeding plumage.

Great egrets stand and wait patiently for fish to swim by and then plunge after their meal.

The power-line towers are frequently used as perches by raptors such as this red-tailed hawk.

Keep your eyes open to see river otters swimming in the ponds at the Marsh in pursuit of their next meal.

Northern harriers have a distinctive swooping, low-level flight pattern while hunting prey.

Great egrets occasional go after prey on land; in this case, it had stalked and killed a vole.

A pine siskin was feeding on teasel seeds.

A House finch showed off its red head.

A great blue heron made a successful catch of a fish on a very windy day.

The hyperactive and shy marsh wren is very vocal with its song as it establishes nesting territory.

This "little brown job (LBJ)," likely a song sparrow, has a beautiful call.

A large murmuration of godwits and other shorebird species moved over the mud flats at low tide.