2cy Herring Gull Green 5.8 – 20130730
Monthly Archives: July 2013
New database proof of concept: keeping track of markers
Yellow H.501 back in Leiden again – 20130728
Winter has arrived
New database project: working towards a new version
Common Gulls – Zoetermeer June/July 2013
IJmuiden harbour – 20130714
Are bare patches in Herring Gulls a sign of old age?
Happy birthday to “my” 27-year old Herring Gull
A study of 2nd-calendar year Lesser Black-backed Gulls in June
