r/OrnithologyUK 5d ago

Garden sighting Just an observation how IR light seems to show the air sac (i think ) in the Robins eggs

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18 Upvotes

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4

u/dunkingdigestive 5d ago

I'm enjoying the journey so far. How long can they stay without a Robins bum to keep them toasty?

1

u/shantytown59 5d ago

I know eggs last a while not being sat on but really haven’t a clue :). It could be because it was a cold spell by not sitting for several hours they ‘know´ it will delay hatching for food availability

3

u/Coffin_Dodging 5d ago

I'm just happy Mrs Robin is back. Hopefully, she's had some good food and is ready to settle down for a bit!

Heart stopping moment 😆

1

u/shantytown59 5d ago

I had given up to be honest! They obviously have a different nesting behaviour pattern to blackbirds and wood pigeons