1/9 EASTER SEABIRD EGG ID CHALLENGE!

I'm doing a PhD on pollutants in seabird eggs, can you recognise the eggs below?

All Irish seabirds & all photos taken under licence. Answers revealed Monday!

1st up, the happiest egg going...

2/9 White eggs are hard to identify so I've cropped this pic so you can see a bit of the adult bird.

Post your guesses under each pic!

3/9 Getting harder now, be careful with this one...very similar to the next egg!

4/9 While the eggs of 3 and 4 look the same, the adults are very different!

5/9 Bonus round 1. This is a replica egg (yes I own a replica egg) of an extinct bird that could once be seen in Ireland

6/9 What bird was nesting in this little cave?

7/9 One of the most beautiful nests I've ever seen with a terrific view!

8/9 Bonus round 2. Not a bird egg. Not in Ireland. Found on a beach in Costa Rica.

9/9 Final tweet! Happy Easter!