Sudoku Puzzles

Are these penguins in the wild or in captivity?

11:04; This one is real tough

Looks similar to the exhibit at Sea World Orlando.

for the first time since I started doing this puzzles(tough) I identified a chain!!!!!!!!!!!
finished it in a single go..feels great..
and its my picture.. yes they are in captivity.

I must have found the chain too!! Very exciting!!
I didn't know there were penguins in Jurong. Too far north for the ones in the wild isn't it?

took me long and 3 guesses - obviously there's technical progress to be made

Nice penguins. Unfortunately, I was not patient/persistent enough and I GUESSED once. Phooey!

Oh! How cute!

Nice social group. I have not seen penguins with a bit of yellow in their coat.

Excellent photo, appy. Great color and reflections.

Unfortunately, I did not find a chain and misplaced some possibilities. Difficult puzzle for me, but great photo as a reward.

Here's what I get. Unique possibilities fill in 5 cells. Then coloring on 7s eliminates 7 from a1 and e3. So e4=7, starting a cascade of unique possibilities that solves the puzzle (with attention to a raft of hidden pairs--the two sets in Row 5 are especially important)

23:02

27 mts.

Good afternoon to all! Nice photo. I assume these penguins are in the bird sanctuary in the Jurong Park in Singapore, so they are in captivity HalT.

Way to go, appy!

Oh, how cute are they!

Sorry Anu. I didn't see your comment.

Happy feet!

mAen! 22:21 Thanks for the explanation, appy!
To tell you the truth, the setting doesn't quite pass as Antarctica :-)

SE=6.6