I wonder if anyone can ID the grub in this Common Whitethroat's beak, at first I thought it was a fecal sack, however it was clearly alive and wiggly, both adult Whitethroat's bought several back and stuffed them down the necks of their hungry brood!
2 comments:
Not certain but it could be a spiders egg case full of baby spiders.
nirofo.
I agree with Nicholas, it does look rather like a spider's egg sac which, when being squashed by the beak, has split letting a spiderling or two escape, hence the wiggly legs .... but it is not that clear with the magnification allowed.
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