Brooklyn Hummingbird Update

It's been about a week since I last checked on the hummingbird nest in Prospect Park. The last time I was there Momma Ruby-throated was still sitting on the nest. This morning the nest appeared to be empty. I waited around for about 20 minutes and didn't see any activity in or around the nest. Either the young fledged already or the nest failed. If anyone observed nestlings within the past week please let me know. Last year's nest near the Vale of Cashmere still had two fat youngsters on June 18th.