16 Nov 2021  

                      

Colour mutation                                                 


colour mutation/Great Crested Grebe Podiceps cristatus leucistic individual 16102009 9186 Stellendam.jpg

Great Crested Grebe Podiceps cristatus leucistic individual 16102009 9186 Stellendam,
The Netherlands c Norman Deans van Swelm

colour mutation/Great Crested Grebe Podiceps cristatus leucistic individual 16102009 9261 Stellendam.jpg

Great Crested Grebe Podiceps cristatus leucistic individual 16102009 9261 Stellendam,
The Netherlands c Norman Deans van Swelm

colour mutation/Curlew Numenius arquata mutation 27011997 Oostvoorne coll. no 86590 Naturalis,Leiden.jpg

colour mutation/Curlew Numenius arquata mutation 27011997 Oostvoorne coll. no 86590 Naturalis, Leiden,
The Netherlands c Norman Deans van Swelm

colour mutation/ShelduckTadorna tadorna leucistic female 21042008 Hansweert.nl .jpg

colour mutation/Shelduck Tadorna tadorna leucistic female 21042008 Hansweert,
The Netherlands c Norman Deans van Swelm
colour mutation/Herring Gull 1CY partial leucistic 27102008 Neeltje Jans, The Netherlands.jpg

Herring Gull 1CY partial leucistic 27102008 Neeltje Jans,
The Netherlands c Norman Deans van Swelm

colour mutation/Herring Gull 1CY partial leucistic 27102008a Neeltje Jans, The Netherlands.jpg
Herring Gull 1CY partial leucistic 27102008a Neeltje Jans,
The Netherlands c Norman Deans van Swelm

colour mutation/Tufted Duck Aythya fuligula leucistic male 24092007 Rotterdam.jpg
Tufted Duck Aythya fuligula leucistic male 24092007 Rotterdam,
The Netherlands c Norman Deans van Swelm