Ringed birds recovery information

I found already two colour-ringed birds this September. Both on Danube. Black-headed Gull and Mute Swan. Here is some data I've obtained in e-mails.

Black-headed Gull (Chroicocephalus ridibundus)

Black-headed Gull (Chroicophalus ridibundus)

• date of observation: Thursday, September 5, 2013
• place of observation: Danube, Hrušovská zdrž water reservoir, Kalinkovská zátoka
• types of rings: left leg - metal ring unread, right leg - white T959
• ringing info: ringed on May 5, 2011 in Poraj, Slaskie in Poland as an adult bird, unknown sex

Mute Swan (Cygnus olor)

 Mute Swan (Cygnus olor)

• date of observation: Sunday, September 15, 2013
• place of observation: Danube, Hrušovská zdrž water reservoir, near Danubiana Gallery Bratislava
• types of rings: left leg - metal ring BUDAPEST HW185, right leg - yellow 75TJ
• ringing info: ringed on August 12, 2010 in Révfülöp, Lake Balaton, Hungary as an adult bird, female
• other observations:  January and February 2011 on Lake Šoderica, NE of Koprivnica, Croatia; December 2011 on Danube, near Danubiana Gallery Bratislava, very close to my place of observation