March 24 observations Valley Power Plant
For the past week, Greg Septon, peregrine falcon manager, has been watching the happenings at VAPP. Two eggs were laid between March 16-18, but he expected to see a full clutch of four eggs. "I believe there could be some territorial battles taking place," said Septon. "Or, the female here is visiting another nest site in the downtown area. Either scenario is possible because the male seems to be doing most of the incubating, but even he seems to leave more often than normal – perhaps to join a battle or look for his mate. If this irregular and inconsistent incubation continues, the eggs may not hatch."
This reminds Septon of 2011 when a similar but more protracted problem occurred. That year, two eggs were laid between March 25-29, and both eggs disappeared on the March 29. Then, between March 31 and April 8, three more eggs were laid in a different location in the nest box. Septon had no way to prove it, but he strongly believed a new female was responsible for the second clutch. Perhaps something similar is playing out this year. Time will tell.
"With three downtown nest sites in rather close proximity, we may actually be seeing reduced production because of the adverse interactions between the falcons," said Septon. "In 1999, we had three successful nests all within a two-mile stretch of the lakefront. But maybe that was just a lucky year because we haven’t experienced anything like it since."
Presque Isle Power Plant
On March 25, Septon saw both adults visit the nest box. The female is (b/g) *P/*S
Pleasant Prairie Power Plant
No eggs yet, but the adult pair is at the nest box regularly. "I feel good about this site," said Septon.
Oak Creek Power Plant
Same as Pleasant Prairie – no eggs yet – but the adults are at the nest box regularly and a scrape has been made.
Port Washington Generating Station
Things are looking good here. Three eggs as of this morning, and the pair is taking turns incubating – just as it should be. If all goes well, we’re looking at estimated hatch dates of April 26-28.
Milwaukee County Power Plant Falcons have been observed here, and on March 24, an adult pair was once again displaying on the nest box deck. This pair is especially wary of any webcam movements, so until there are eggs (positive thinking here) the cam is parked, locked and stationary.
_________________ "The time to protect a species is while it is still common" Rosalie Edge Hawk Mountain Sanctuary Founder
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