Previously “Diary of a Birding Medic”; “Rugby Birder”; "Bempton Birder”. All views expressed in this blog are my OWN and do not represent the opinions or policies of any organisations or entities whatsoever with whom I have been, am now or will be affiliated. Reference to Bempton Cliffs in NO way promotes the organisation known as RSPB Bempton Cliffs, but rather the FREEdom of the cliffs.

Thursday 20 July 2023

Bempton Cliffs Walk (Ageing Gannets) - 20th July 2023

 

Year 2 Immature Gannet

Ageing Gannets can be a bit of fun! Gannets lay one egg per year which they incubate under their large, very vascular feet, for about forty five days. From hatching to fledging takes about ninety days. Gannets, on average, live for about twenty years. It takes five years for a Gannet to reach maturity and their appearance changes each year. As a rule of thumb, the darker a fledged Gannet is, the younger they are. When they fledge from the ledges, they will be almost black in appearance. Each year, they will lose more dark plumage and gain more white.

It is almost the opposite for Gannet young, known as Guga. As they gain feathers, they are predominantly white, gradually becoming darker as they progress to fledging.

So year one Gannets, once they fledge are almost black/dark brown. However, at the moment, the year one Gannets are still in their Guga stage.


Year Two Gannets





Year Three Gannets








Year Four Gannets have the "Piano Keyboard" Markings





Year Five (Mature) Gannets






Something to consider next time you are on the cliffs?

All images taken with Sony RX10 Mk4.

Thank you for looking.


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