Petaluma Wetlands Alliance Monthly Bird Survey at Shollenberger Park (6/20/19)

Thursday, June 20, was the bimonthly bird survey at Shollenberger Park for the Petaluma Wetlands Alliance (PWA). Cloud coverage and distant fog greeted us, making for a beautifully moody setting.

Right away, we encountered this male Ruddy Duck in breeding plumage performing a courtship display for a nearby female. With his tail cocked straight up, the male Ruddy Duck bobs his head and rapidly hits his bright, blue bill against his breast.

Just beyond the Ruddies sat a Black-necked Stilt on its nest.

Count leader Andy LaCasse pointed out this beautiful, blooming Cardoon.

We heard the familiar song of a Common Yellowthroat and looked around for the singing male.

Though we never located the songster, we tracked a tiny bird moving around in the willows until we finally got a look – a juvenile Common Yellowthroat! Since Common Yellowthroats are known to learn their songs from nearby singing males, perhaps this young bird was listening closely and taking notes.

We came across another Black-necked Stilt calling repeatedly – this time sitting directly on the ground instead of a nest.

Much to the group’s surprise, the stilt stood up and out popped three chicks!

The intrepid chicks explored the muck until their parent eventually called them back. Look how well-camouflaged the chicks are!

Further down the trail, we encountered a common cohabitant of the Black-necked Stilt – an American Avocet and its adorable, long-legged chick.

More and more young birds are popping up as we head into summer – like these Ruddy Duck mini-me ducklings with their mother.

Several in the group strained their eyes toward the distant mudflats to ensure no bird went uncounted. They tallied a couple Willets, some Marbled Godwits, and a surprising off-season Greater Yellowlegs.

A couple Killdeer blended into their marshy habitat.

Listen to the noisy Killdeer here.

During April’s Shollenberger survey, we observed a couple tiny, neon-colored American Coot chicks. Two months later, the chicks are now juveniles with light gray plumage, but otherwise very similar in shape to an adult.

Because of their tendency to perch conspicuously while singing, Song Sparrows are one of the most readily visible songbirds in the park.

A flock of busy Bushtits blew through the bramble in front of us. A male Bushtit – like this one – has a dark eye, versus the light eye of a female.

Listen here to the flock – which at one point included at least 15 birds!

A Red-winged Blackbird female landed on the trail to grab some plant fluff.

We tracked her as she flew off, and delighted in watching her feed a hungry fledgling in the shrubs.

Listen in to the feeding interaction between the mother and its young below. Just after 5 seconds, you can hear the excited fledgling start squealing as mom approaches with food.

As the group rounded the last corner, we ran into PWA Board Director John Shribbs who was fixing up the entrance kiosk.

What an amazing last-day-of-spring we enjoyed for this June survey! By the end of the morning, the team had tallied 63 species for PWA’s June 2019 survey.
 
If you have any questions about this particular count or if you’re interested in participating in future counts, please contact the coordinator/compiler for these surveys, Len Nelson, at lennelsn@comcast.net.
 
If you’re interested in seeing the male Ruddy Duck’s courtship display in action, you can check out TerraNaturalist’s YouTube video here: Mysterious behaviors of Ruddy Ducks.