Seventeen observers attended this joint Chicago Ornithological Society/Evanston North Shore Bird Club sponsored field trip to the Calumet Water Reclamation Plant in southeast Chicago on Sunday morning (19 August 2012). An absolutely gorgeous day for a field trip. Shorebirds were rather cooperative as well - we counted over 300 individual shorebirds of ten species (the vast majority of shorebirds were in Lagoon 17, which was the very last lagoon we visited).
Shorebird highlights included 3 BAIRD'S SANDPIPERS in Lagoon 17 and 1 WILSON"S SNIPE in Lagoon 3. The most numerous shorebird species was LEAST SANDPIPER (~135), followed by PECTORAL SANDPIPER (~80). We counted at least 20 SEMIPALMATED PLOVERS, which is a decent total for that species. There were several non-shorebird highlights as well. Two OSPREYS were seen flying over the plant, and a total of ten GREEN-WINGED TEAL were seen at various lagoons. Andrew Aldrich pointed out a very pale adult Red-tailed Hawk with a largely white head and patchy white on its upper parts, but an entirely red tail. This bird was possibly a Krider"s/Eastern intergrade, or a leucistic/partial albino Eastern Red-tailed Hawk. This bird appeared to be the same individual that was reported at Calumet by Fran Morel one week earlier. Two SORAS were in Lagoon 3, and a NORTHERN WATERTHRUSH was in Lagoon 15. After Calumet WRP, eleven of us stopped at the south end of Deadstick Pond, where we added two more shorebird species (2 juv. SHORT-BILLED DOWITCHERS and 1 juv. STILT SANDPIPER), bringing our total to twelve shorebird species for the day. Our trip results (Calumet Water Reclamation Plant only) are listed below. By my count, we found a total of 43 bird species at the plant.
Once again, a big thanks goes to the Metropolitan Water Reclamation District of Greater Chicago for graciously allowing our groups access to the plant.
- post contributed by Walter Marcisz
Calumet Water Reclamation Plant (Chicago), Cook, US-IL Aug 19, 2012 7:10 AM - 10:45 AM
Green-winged Teal (American) 10
Double-crested Cormorant28 (27 flyovers)
Great Blue Heron2 (flyovers)
Great Egret2 (flyovers)
Red-tailed Hawk3 (Total includes 1 very pale adult with largely white head & patchy white on upperparts, but an entirely red tail. Possibly an Eastern/Krider"s intergrade, or a leucistic/partial albino Eastern Red-tailed Hawk.)
Baird"s Sandpiper3 (3 juveniles)
Herring Gull (American) 1
Rock Pigeon2 (flyovers)
Red-winged Blackbird175 (estimate)