Robert Kinney sent this in, and asks “What in that sonagram tells us that this is a rooster? I don’t get what this is trying to tell us, or why it’s supposed to be funny.”
Tundra
Robert Kinney sent this in, and asks “What in that sonagram tells us that this is a rooster? I don’t get what this is trying to tell us, or why it’s supposed to be funny.”
Comics I Don't Understand 
I think just the concept of performing a sonogram on an egg is supposed to be funny by itself.
The phrase “looks like you’re going to have a little rooster” is there to show us that this is a sonogram. It might not be clear from a picture alone.
And here I thought it was because on the sonogram, the tech could discern a…cock!
(Hey, somebody had to say it)
I think it’s the old comic strip of “X + Y = zany humor!”. Looks like they are using the sonogram plus egg candling, the comment is only to make it clear that it’s a sonogram.
I’m glad to say I understood all 3 comics in link! I like that the artist is able to poke fun at himself. Reminds me of Pastis.
Might also be a little dig on the fact that no matter what a doctor tells you, it’s nigh impossible to make anything definitive out in a sonogram.
His name is my name too!
To this biology teacher, it looks as if the sonogram (x-ray?) is showing the chicken embryo’s primitive streak (https://en.wikipedia.org/wiki/Primitive_streak). The joke is, there’s no visible difference between male and female at the blastula stage.
How do you interpret the left chicken’s expression?
– Delighted ?
– Terrified ?
– Other?
The rooster is terrified because he knows on the farm there’s only a need for one rooster. He knows his days are numbered.
“there’s no visible difference between male and female at the blastula stage”
Heck, for chicks there’s barely a visible difference at any stage — chick sexing is difficult and only after much training can it one learn to do it…
https://www.purinamills.com/chicken-feed/education/detail/how-to-sex-baby-chicks
@David Meiklejohn
https://tv.getyarn.io/yarn-clip/8bf641b9-fa21-4cde-a87c-c348390179e7
There are some good ones on that Gallery page…just keep scrolling.
Maybe papa rooster had not planned on having little roosters or hens and he is upset at his accident?
I went ahead and subscribed to his Patreon page, and he works way ahead of date of official publication. And readers there can make comment threads on strips that are technically a few weeks in the future! (This also meant scrolling considerably back to check comments for a strip with an almost-current printed date.)