From the tiny Hummingbird egg, to the awesome Ostrich egg, for Easter Nature Live went a little egg-crazy.
I have to apologise in advance, its going to be impossible to get through this without making some terrible egg-related puns. So I might as well start with one.
Our egg-cellent egg curator Douglas Russell joined us from the bird group, based out at the NHM in Tring, Hertfordshire, for our eggy celebrations. Douglas looks after some really rather special collections, going back hundreds of years, and his egg-spert knowledge was put to good use as he egg-splained why he thinks eggs are 'The Most Perfect Thing in the Universe'.
Its all to do with just how perfectly they have evolved to look after the tiny, developing chick - and to show us, he cracked open a massive Ostrich egg - its much easier to see the features scaled up! From tiny pores that allow the exchange of gas through the shell, to a self-righting system inside so that the embryonic chick is always closest to the warmth from its brooding parents, all a tiny bird could need to start its life off is contained within the calcium carbonate shell. The same features are present right down to the tiniest bird eggs around - the Hummingbird egg, about the size of your little finger nail!
Although Ostriches produce the biggest egg of any bird alive today, there used to be one to beat it - the Elephant Bird, now sadly extinct, used to produce an egg even bigger!
And if you want to see for yourself, you can see a range of amazing eggs if you visit the Bird Gallery, in the Green Zone at the Museum.