![Black-headed Gull W[E2YZ] / M[6435854] Stockholm](https://a4.pbase.com/g9/56/840356/3/158665697.5n70NkDw.jpg) Black-headed Gull W[E2YZ] / M[6435854] Stockholm
by Rob Hoeben
|  Leiden (Netherlands)
by Sphynx
|  Leiden-Holland..,mi pueblito
by Hodero
|  Beachcleaner spin-off in NCB Naturalis, Leiden
by Foto.Wildschut
|  Otter
by Foto.Wildschut
|
![Black-headed Gull W[E0TV], previously Y[2M]](https://a4.pbase.com/g3/56/840356/3/121127850.sgKrmJJp.jpg) Black-headed Gull W[E0TV], previously Y[2M]
by Rob Hoeben
|  Summerlife in Leiden
by Rob Oele
| ![Black-headed Gull W[EZA4] / M[ST316690] Helsinki](https://a4.pbase.com/g10/56/840356/3/166771962.fbSsEUUi.jpg) Black-headed Gull W[EZA4] / M[ST316690] Helsinki
by Rob Hoeben
|  Leiden Revisited
by simwong
|  Kerstvakantie van een mammoetbaby in NCB Naturalis
by Foto.Wildschut
|