
The resident red-tailed hawks of Tompkins Square Park, Christo (on top in the first pic) and Amelia, grab some of the fading sunlight early this evening after the showers passed through ...

Christo delivered food to the nest, and Amelia seemed to tear pieces off and feed at least one hatchling deep in the nest. We're not sure when exactly the hatch occurred, but today was the first day an obvious feeding took place.
I wasn't positive of the situation until I returned to the park at sunrise this morning and found Christo laying down in the nest and Amelia perched nearby. He came out for a few minutes and they mated, then returned to the nest with tree bark. At that point, Amelia laid back down in the nest and remained there for most of the day. I saw them trade places twice, which is classic brooding behavior.
Hawks usually lay 1-3 eggs over the span of a few days. After the first egg is laid, they will continue to leave the nest to mate, but Amelia will stay in the nest through the night. Last year, Amelia appeared to lay her first egg March 13, so they are early this year. However, I'm not really surprised as they completed their nest in January and have been mating regularly over the last few weeks. Incubation will take about six weeks, so a hatch time would be mid to late April.
Secondary rodenticide poisoning happens when the chicks are fed poisoned rats, mice or any other prey that has ingested rodenticide. The parents, Christo and Amelia, likely didn't eat the same food, or not as much of it, so didn't die. However, they are exposed to the same danger every time they eat.
The NYC Parks Department does not use rodenticide in Tompkins Square Park. However, it is used throughout the city and the hawks do not restrict their hunting to the park, so they can pick it up anywhere.
The Parks Department has been using dry ice to control rats in Tompkins Square. I think it's very effective and is not toxic to other animals, plants or people. However, if you look around the park or the streets of the East Village on any given day, there is trash and food everywhere. Until we, as a community, stop feeding the rats, nothing will change.
Several people have asked me if this means the hawks will lay more eggs this year. Short answer: No. The breeding time for the hawks is generally February - May, so it is too late in the year to start again. The hawks undergo hormonal changes in the spring that lead up to egg-laying, and that time has passed.
However, nest-building is bonding activity, so it's a good sign. It shows Christo and Amelia are working together and maintaining their territory and partnership. Although I'm really sad not to have baby hawks playing in the park this summer, I'm happy to see the adults staying close to home and remaining visible.