I got this question from csmithstudio on Tumblr:
Hi Jenn! A friend told me about your blog and I’m delighted and grateful to you for taking the time to post this! I am an artist focusing almost entirely on birds and I would like to do a painting of crows including the treasures they commonly collect. I’ve tried to research what they might be attracted to but so far have only found golf balls and angry golfers! Do they stash their hoard in a nest or somewhere else? Thank you! Christina
I’m super glad you asked me this! I’ve been meaning to post about this topic. The reason you can’t find anything is because crows don’t collect shiny things. This is an extremely common myth, but it’s just that, a myth. (And I’ve seen way too many “official” websites state this myth like it’s fact, so don’t feel bad for believing it!) The thing is, stories about crows collecting shiny things are anecdotal, and not observed by people who watch crows constantly and study them.
There’s a couple of reasons why people might think crows like and collect shiny objects and continue to pass along the myth. First, young crows are very curious about everything. They play with all sorts of objects they find in nature, and chances are if something is glinting they may me more likely to explore that object (just like how you might notice something glinting in the grass and investigate it), than something that blends in to the background. As I talked about in a previous post, juvenile crows are the same size and, to the untrained eye, look just like adult crows, therefore people may be attributing a juvenile play behavior to all age groups, accidentally. Are they particularly attracted to shiny objects, or obsessed with them? Highly unlikely, they may just be more likely to find them because they are easier to see/attract attention easier (welcome to why advertisers use shiny and bright things on other humans to attract their attention). Honestly, adult crows are more likely to be terrified of brightly colored or shiny objects unless heavily associated with food on multiple occasions.
Second, a lot of observations about crows playing with shiny objects come from people who have had pet crows. A hand-raised crow is going to have a lot of exposure to human objects, and will therefore play with those objects. They may be attracted to what their “parents” (the humans) are attracted to, and therefore be more interested in rings, watches, silverware, etc. for the reason that they are of high value to their “family” not because they are shiny objects.
Third, it is likely that the shiny or bright objects simply remind the crows of food, or the crows are investigating them for potential food opportunities. The going theory for why crows and ravens are so attracted to golf balls, as Christina mentioned in her note, is that they look an awful lot like delicious eggs. I have personally watched crows play with and steal golf balls off a golf course (which was hilarious). However, they lose interest pretty fast after, presumably, realizing the objects aren’t food (though I swear some of the crows just had a blast chasing those golf balls around).
There are a number of reasons why crows may be attracted to shiny or bright objects and trinkets, but no more so than you or I or most animals would be attracted to them. In other words, their interest in shiny objects does not appear to be inordinate.
So, do crows hoard the objects they find? No.
Crows don’t hoard anything. If a crow takes off with your keys, it was likely that the bird wasn’t done exploring them for any food opportunities and took off with them to finish it’s inquiry in safety (and probably dropped them somewhere when it realized it had no use for the keys). Crows, and other corvids, do cache items, which means that they store them for later (see my post about Nutcrackers for the most incredible cachers), but wild crows only store food items (I say “wild” because captive birds may cache non-food items, which would be expressing an instinctual behavior, using non-typical items found in the captive habitat). Furthermore, they don’t cache all of the food items in the same location (larder). Crows (and most corvids) are scatter cachers and leave bits of food all over the place within their territory (I once watched a crow pull half a ham sandwich out of the branches of a spruce tree…I still have NO idea where he was keeping it in there, but it was pretty hilarious to watch). So there is no secret hoard full of shiny objects to find in a crow territory.
What about the nests? Well, crows don’t use nests for anything but raising babies. The nests are built just before egg-laying at the beginning of the breeding season, are lined with soft grass and moss, and are immediately abandoned once all the kids fledge. Crows don’t store objects in a nest or sleep in a nest (unless you are a baby or the bird on incubation duty during the breeding season). Although crows have been reported to use wire hangers and other urban metal materials to build the structure of their nests, this is more likely due to the utility and availability of these objects as construction material, not because they are shiny. You may wonder if crows might put shiny objects in the nest to attract attention from potential mates, but crows have selected mates far before nest building begins. If you find a crow nest in the wild, you won’t find wondrous treasures, you are likely to find a pile of sticks, grass, and poop….and sometimes a sleeping raccoon (true story).
So in conclusion, Christina, I would love to see you possibly illustrate caching behaviors of food, since those are the most valued treasures for crows. In urban/suburban environments I’ve seen them cache everything from seeds and dead animals/insects, to ham sandwiches, pizza, and french fries. It might be more fun (and accurate) for you to explore the wide and variable diets of these birds. Feel free to contact me for more details if you are interested!
You have also given me the chance to review a game a friend bought for me recently, Crows by Valley Games, Inc. I brought this game to a lab meeting and as a crow research group we played. While thoroughly not impressed by the premise of attracting crows with shiny objects and trinkets, it was still quite fun! We highly recommend it with the caveat that you replace “shiny objects and trinkets” with “peanuts and road kill.” They certainly hit the mark with the trash tiles though.