The Gabi Mann story
The original BBC article (Katy Sewall, 2015) characterized the relationship: Gabi and her brother had been scattering food in their yard for years, deliberately attracting crows. The crows came regularly. Over time, the children started finding small objects in the area where they fed the crows — sometimes left on the food platform, sometimes nearby. The objects accumulated into a collection: pearls, screws, paperclips, a piece of glass smoothed by water, a heart-shaped piece of metal. The family documented and photographed the objects; the story spread because the photographs were charming and the inference of intent was hard to resist.
Object-leaving by crows in human-fed contexts has been observed beyond the Mann case.
What's known about the behavior
Object-leaving by crows in human-fed contexts has been observed beyond the Mann case. Multiple Seattle-area crow-feeders, several elsewhere, have reported analogous patterns. Researchers in the Marzluff[1] lab have observed and partially characterized the behavior. Common features: regular feeding establishes the relationship, objects appear over weeks-to-months timeframes, the objects are typically small and portable, the leaving is not consistent across all crows in a feeding-receiving population. Some birds leave things; many don't. The behavior is real, documented, and not universal.
What explains it
Three hypotheses, ranked by current explanatory weight. First, crows commonly cache and recover small objects (including non-food items) and may inadvertently drop or abandon objects in places they've learned to associate with food access. This is the boring hypothesis; it explains most of the data without invoking any communicative intent on the bird's part. Second, juvenile and sub-adult crows engage in object-manipulation behavior more than adults, and human-feeding sites attract these less-experienced birds disproportionately, so the object-leaving may be a side-effect of juvenile object handling. Third, the more interesting hypothesis: some individual crows may be performing a behavior that functions to maintain the relationship with a known, food-providing human — a kind of crow-side reciprocity. The third hypothesis is the most popular-coverage-friendly and the hardest to demonstrate rigorously. The first hypothesis covers most observed cases.
Why the romantic framing keeps surviving
The interpretation 'the crow is giving me a gift' is more emotionally satisfying than 'the crow dropped an object near the food station because it was holding the object incidentally and lost interest.' Popular coverage rewards the satisfying frame. The careful frame doesn't go viral. The relationship between popular and careful coverage in animal-cognition reporting is structured this way for most charismatic-cognition findings; the gift-giving story is a particularly clean example. The careful version remains useful as a check on what the evidence actually supports.
What this means for the human-crow relationship
Regular feeding does establish a recognizable relationship with crow individuals over time. The Marzluff[1] face-recognition work shows crows can identify and remember the specific humans who feed them. That part of the popular framing is well-supported. Whether the relationship includes anything the crows themselves experience as 'gratitude' or 'gifting' is a different question — and a harder one — that can't be settled by observing object accumulation in the feeding area. The honest version: you can build a real, recognized relationship with neighborhood crows by feeding consistently. Whether they 'thank' you with gifts is less established. Whether they remember you and treat you differently than non-feeders is well-established.
What to do if you want to try
Feed unsalted unsweetened peanuts (in the shell preferred), suet, or hard-boiled eggs in small amounts. Pick a consistent location and time. Don't make sudden movements. Don't try to touch the birds. The relationship-building works on the crows' timeline (weeks to months); you can't accelerate it. Don't feed dogs, cats, or other domestic animals at the same site if you can avoid it. Provide water if local conditions allow. Be patient about whether you'll receive objects — most people who feed crows long-term don't, and that's normal. Some do, and that's also normal.