Unfortunately, the story of the family in this nesting season has an unfortunate, and uncertain ending. At least, I do not know the final outcome of everyone. In early June, we had heard that the father was struck and killed by a vehicle on the River Road, within a few hours after Miguel and I left for the day. Our next opportunity to visit was a few days later. This was devastating news, obviously. In this species, both parents are critical in providing for the chicks and ensuring the best chances of successfully raising the entire brood. Still, with mom being a great provider and at least one, or potentially two, chicks capable of flight, we had good hopes that she could finish raising 1-3 of the chicks successfully. Once fledged, the parents still need to provide for the chicks for another 6-8 weeks until they are capable hunters. It would be a long hard struggle, but we had high hopes she would do her best.
Then more unfortunate news found its way to us. Another male had moved into the territory. At first this seemed like it might be good news, potentially someone to help mom complete the job of raising the brood. But as time went on, he seemed to be getting very aggressive with both mom and the chicks. He thwarted the mother’s attempts at bringing in food and harassed the chicks relentlessly every time they took to the air. Miguel and I visited for a number of hours over a few day period during this time and the number of successful feedings we observed were pitifully few – seemingly not enough for the chicks to complete their growth and perhaps move with mom to a different territory. We ended our observations around this time. I have heard through second hand accounts that mom was seen with two or three chicks flying away from the territory, so maybe there was a happy ending but I do not know.
A Thousand Acres of Silphiums 