Tim Birkhead

[Tim Birkhead @TimBirkhead1]

@BillOddie
Can you support this
http://t.co/eWQR9DJ0zj

[Tim Birkhead @TimBirkhead1]

@gordonjbuchanan
Can you support this?
http://t.co/eWQR9DJ0zj

[Jon Khoo @mrjonkhoo]

@ChrisGPackham Any chance of a RT for @ILCP @projectseahorse expedition to help protect Danajon Bank, Philippines - http://t.co/zaWVqkVufx

[Tim Birkhead @TimBirkhead1]

@ChrisGPackham museum egg empty = diff centre of gravity = tight circle.
Full egg = very broad circle, > than ledge. Shape is for incubation

[Tim Birkhead @TimBirkhead1]

@ChrisGPackham Send me your email and I can explain

[Tim Birkhead @TimBirkhead1]

@ChrisGPackham on Springwatch, you are incorrect about the guillemot's egg. The egg you used was an EMPTY museum egg.

[Tim Birkhead @TimBirkhead1]

C. Packham on Springwatch is incorrect about the guillemot's egg. The egg he used was an EMPTY museum egg.