Black Throated Diver (Loon) - Sweden, Black River, April 2018 by Daan Hendriks published on 2018-07-09T10:50:10Z Black Throated Diver (Loon) calling around midnight on a lake in the Black River area, Sweden, April 2018. Sennheiser MKH8020 in DIY SASS // Sound Devices USBPre2 -> Sony D100