What’s a crop?

 I have been looking at ospreys for 33 years so I notice so many small things that others may not…..especially those who are just watching online or are new to watching ospreys in person. I have mentioned their crops…..this is the area on the upper chest where the food goes to start the digestion process….ospreys don’t chew, they just swallow so the food begins to break down in the crop. Their crops will be empty and full many times during the day. I often get a sense about how recently they have eaten by looking at the crop….so it’s something I often record in my field notes. I also sometimes note if I see them poop. Sometimes when I am trying to discern if chicks have hatched, when I still can’t see them because they are too tiny, I will see a little poop squirt coming out of the nest! Yup they are in there.

Anyway as I watch the Arb cam I watch the crops on the chicks ……they should have a nice bulge after eating if they really got enough food. In the early feedings there was almost no bulge….sigh. But now I am seeing fuller crops. So here is a screenshot with the bulging crop circled…..so you can learn to focus in on that part of their little bodies to see how the feeding really went. A lot of food is dropped, and this mom ends up eating a lot of the bits herself. Most females focus more on the chicks and then finish the fish themself when the chicks fall down and go to sleep (“food coma”). I am happy to see some fuller crops now….so that is something you all can watch for!