rstewartb's picture

Whelk

Observed: 5th October 2013 By: rstewartbrstewartb’s reputation in Invertebratesrstewartb’s reputation in Invertebratesrstewartb’s reputation in Invertebrates
Herring Gull with catch (Whelk?)
Herring Gull with catch (Whelk?)
Herring with Welk
Description:
Identifications
Species interactions

Species with which Common Whelk (Buccinum undatum) interacts

Comments

JoC's picture

Buccinum undatum

So, how did the gull get the whelk out?

Jo

rstewartb's picture

Extraction

I didn't see the whole process but it started by pushing the shell into the shingle on the beach, held it in place with its feet and appeared to use its beak to extract the contents.

JoC's picture

Extraction

Thanks for that; does it suggest a learned process? Did you observe if the gull got the whelk by diving for it? I think these big specimens are usually sub-littoral, but maybe it was washed up on the beach. Perhaps it was already dead as it has not retreated and closed its operculum in defence. There is always something new to learn on the beach. I love it.

Jo

rstewartb's picture

New photo added which might

New photo added which might help. The gull was on the water when it acquired the Whelk.