Today marks the 41st day since the third egg was laid. We haven't noticed any sign of a pip in the egg shell and at this stage in the game, it may be best if the third chick doesn't hatch as it will be so far behind in development compared to the other two chicks and likely wouldn't survive. 

Sibling rivalry with ospreys can be quite severe with older chicks being more aggressive when it comes to surviving. The first born tends to give rise to the strongest and biggest of the brood.