Titmuss Ffion Dylan

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Last Name
Titmuss
First Name
Ffion Dylan
ORCID
0000-0002-1255-9907

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  • Article
    Brilliant bird brains: Object recognition in Herring Gulls (Larus argentatus smithsonianus)
    (Resilience Alliance, 2023-12-31) Covino, Kristen M. ; Titmuss, F. Dylan ; Brosseau, Joseph E. ; Donacik, Dora C. ; Ellms, Maddie E. ; Fisante, Allison E. ; Maday, Olivia K. ; Nowicki, Alyssa R. ; Okuyama, Daphne ; Robinson, Jessica M. ; Schickfus, Katherine A. ; Stanley, Eliza L. ; Everett, Mary Elizabeth
    The ability to recognize and associate objects with prior experiences has been demonstrated in several avian taxa. Corvids, for example, recognize visual stimuli associated with negative previous experiences and will modify their behavioral responses according to the level of perceived threat. However, the extent to which similar memory-based behaviors exist in seabirds is poorly understood. Our study investigated object recognition by Herring Gulls (Larus argentatus smithsonianus) on their breeding grounds, the site of a long-term monitoring project. When handling gulls and conducting field research, researchers wear standard bicycle helmets as a protective measure against physical aggression by nesting gulls. We tested whether previously banded gulls vary their behavioral responses based on the headgear worn by human researchers. Herring Gulls were significantly more aggressive when approached by helmeted observers compared to those wearing neutral headwear or even holding a helmet, thus indicating a potential association between wearing bike helmets and the negative experience with researchers. Our study demonstrates that Herring Gulls are capable of object memory and object recognition within context, and display different behaviors toward different objects according to their levels of perceived threat. This information is key when designing studies with nesting gulls to ensure that behavioral biases are not unintentionally created due to gull prior experiences or researcher safety gear.
  • Dataset
    Carbonate System data on Georges Bank from cruises occurring in May and September 2021
    (Woods Hole Oceanographic Institution, 2025-03-05) Titmuss, F. Dylan ; Rheuban, Jennie E. ; Cameron, Louise P. ; Grabowski, Jonathan H. ; Wang, Zhaohui Aleck
    These data are described in a study presenting the first high-resolution spatial analysis of carbonate chemistry on Georges Bank, a highly productive shallow bank located at the southeastern edge of the Gulf of Maine. Despite numerous studies on the hydrography, nutrient chemistry, and biology, regional carbonate chemistry remains unexplored, in particular for near-bottom conditions. Data included in this repository were collected during two cruises that occurred in May and October 2021. Data include temperature, salinity, pressure, dissolved oxygen, dissolved inorganic carbon, and total alkalinity. These data were used to identify multi-endmember mixing, and the manuscript describes the result of a Bayesian mixing model analysis that separates water mass mixing from other processes like net community production, air-sea exchange, and other biogeochemical processes/error. Data included in this repository were collected during two cruises that occurred in May and October 2021 on Georges Bank, in the Northwest Atlantic region. Data include surface and bottom water temperature, salinity, pressure, dissolved oxygen, dissolved inorganic carbon, and total alkalinity.