I know that there are at least two babies, from my mostly overexposed flash shots. Seems like one-third flash intensity was too dark and two-thirds was too light. Getting good in close flash exposures seems to be hit and miss, despite the control you have. Along with the babies, you can hear my recirculating fountain. Note: Last year the wrens were unsuccessful in building a nest on that spot, so I added the skillet to retain the nesting material.