Today on the roosting place at Miedwie Lake still croatian Black-headed gull (Larus ridibundus) white S740 and 2 from the polish project: T16N, T59N. Also observed some hering gulls and BHG with metal ring, but was to dark to read them.
fot. Marcin Sowa - white T59N (polish project)
fot. Marcin Sowa - sunset on the Miedwie Lake