Checklist S204973972

Observations

1. Rock Pigeon (Feral Pigeon)

   Number observed:  4

   Exotic: Naturalized

2. Eurasian Collared-Dove

   Number observed:  1

   Exotic: Naturalized

3. Killdeer

   Number observed:  12

4. Short-billed Gull

   Number observed:  1

   Media

5. Ring-billed Gull

   Number observed:  500

   Details

   Estimated by increments of 10 between 10 and 50 up to 500 while scanning through the scope. These birds were on the mudflat and in the stream channel both areas of which usually constitute a full pond, but not today. The water level is so low most of the gulls were standing or foraging as they walked across the mudflat and spread out and in fact, maybe the spot attracts more gulls when the water is mostly drained like today. I spent most of my time scanning through the flock multiple times filtering for both obvious features of larger size, leg color, mantle color, and smudgier necks and subtle features of bill size, shape and color, and eye color, and came up with no other species except for the single Short-billed Gull.

6. Larus sp.

   Number observed:  100

   Details

   Circling over the channel near the bridge that leads into the feed lot. Likely all Ring-billed, but I didn't assess them and instead concentrated on the mudflat and stream channel birds.

7. Black-crowned Night Heron

   Number observed:  4

   Media

8. Great Blue Heron

   Number observed:  2

9. Sharp-shinned Hawk

   Number observed:  1

10. Bald Eagle

    Number observed:  1

11. European Starling

    Number observed:  2

    Exotic: Naturalized

12. American Robin

    Number observed:  11

13. Red-winged Blackbird

    Number observed:  300