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Juvenile Lesser Black-backed Gull , Isle of May
17059
43
Firth of Forth - Isle of May
Juvenile Lesser Black backed gull (Larus fuscus) with its beak open, Isle of May, taken by Rebecca Dickson. The bristly appendages inside its mouth seen on its upper jaw are not teeth in the proper sense, but are spines raked backwards to help the gull keep control of slippery fish it is eating or (when it grows up to be a parent), for retaining fish to feed its young. The tongue has a backward-facing barb useful for moving food into its gullet.
01 August 2021
Juvenile Lesser Black-backed Gull , Isle of May
17058
43
Firth of Forth - Isle of May
Juvenile Lesser Black backed gull (Larus fuscus) with open beak, Isle of May, taken by Rebecca Dickson. The bristly appendages inside its mouth seen on its upper jaw are not teeth in the proper sense, but are spines raked backwards to help the gull keep control of slippery fish it is eating or (when it grows up to be a parent), for retaining fish to feed its young. The tongue has a backward-facing barb useful for moving food into its gullet.
