I thought I'd share some photos that you may enjoy of well camouflaged eggs, I recently took, while participating in a study of river birds with some students. The cryptic pattern and colour of these plover and sandpiper eggs make them blend in so well with the background habitat that makes them very difficult to spot. For instance with these eggs laid among small stones when I was just say, 2 metres, away if I took my eye off them for a second they 'disappeared'. Take a look -

See the nest and eggs? No? Try pic below.

A bit closer.

The eggs close up.
A little background story.
When we revisited the nest 2 days later one egg was missing and another slightly chipped, as though it had been pecked . I strongly suspected predation by crows. This was borne out when I waded across the river and saw three crows 'working' a shingle shoal. One was sitting on a washed up log and was watching the other 2 walking over the shingle engrossed in a cold search of another nest. I formed the distinct impression that the crow on the log was directing the other 2 in their search. A plover attempted to land where they busy but was immediately chased off by one of the corvids. Then they all became aware of my presence and flew off. They really are canny crows.
The nest and eggs picture below is that of a sandpiper found not far from the riverside but this time on a grassy bank. You can again see the wonderful cryptic pattern of the eggs which helps them merge into the background vegetation.

Hope you enjoyed

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