![]() ![]() Grinnell, her longtime mate who was killed last March 31 Annie seems to have chosen well.”Īdded Mary Malec, a raptor expert with Cal Falcons, “Lou is doing a great job taking turns incubating the eggs and has managed to cover all four eggs very well.”įemale falcons are the dominant partners in their relationships, said Peterson, and are much larger than the males.Īnnie usually has laid four eggs each year since 2017 she and “He has been bringing food frequently and taking long stretches of incubation duty. Lou, who been in Annie’s life since late November 2022, “has been a rock star,” said Peterson. Lou (left) recently defended the territory he now shares with Annie from a falcon hoping to take Lou’s place. There’s no doubt, he said, that Lou is the biological father, adding that “extra-pair paternity is very rare in falcons.” This year, she didn’t have that problem.” Annie’s first egg of 2022 arrived on March 26. “Last year, (her egg-laying) was likely delayed due to the large number of floater birds competing for her territory. “Perhaps she was comfortable with Lou and the status of her territory? Perhaps she was happy with the availability of food? Those were laid on March 10, in both 20,” said Sean Peterson, an environmental biologist with “She was seven days earlier than her previous earliest eggs. That first egg was the earliest one Annie has ever laid in her past six breeding seasons on campus. She laid her fourth and last rust-colored egg on Saturday morning the first arrived the previous Saturday, March 4. This time, she’s doing so with help from her new mate, Leaving last year’s drama behind, Annie, UC Berkeley’s female peregrine falcon, is back to her primary task at this time of year: producing a new crop of chicks. Annie inspects her four new eggs, which were laid between Saturday, March 4, and Saturday, March 10.
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