CALL is pleased to announce the relaunch of their popular Science and Environment Lecture Series, beginning in January. We will be using the Zoom Webinar format which allows for larger numbers of attendees and a more orderly presentation format. A Q&A feature in the Webinar platform allows for the audience to ask questions of the speaker at the end of the presentation. The sessions will be held at 7:30 PM on the first Tuesday of the month, as was the custom pre-Covid.
The Evolution of Parental Care in Birds
Animals that provide parental care greatly increase the likelihood that their offspring will survive to adulthood. Birds are well known for their parental care and in many species both members of a mated pair will share the parental duties of feeding, brooding, or defending the young from predators. However, providing parental care is not cheap! It takes time and energy to raise offspring and this means there are fewer resources available for other activities such as self-maintenance, defending territories from competitors, or producing a greater number of offspring. This conflict between the needs of the offspring and the impacts on the caregivers has helped shape the mating systems of birds and has resulted in some fascinating alternative reproductive strategies.
Speaker: Dr. Dorothy Hill an Associate Professor and the current Chair of the Biology Department at Mount Royal University.
Bio: Dorothy Hill was introduced to birds by her godmother, Dorothy Hazlett, during some memorable very cold Calgary Christmas Bird Counts. This early exposure caused her to veer away from a sensible career choice and instead study Zoology at U.B.C. Her summers spent working for Canadian Wildlife Service, and later as a field assistant on several university research projects, induced her to pursue graduate studies, first at University of Manitoba (MSc) and then University of Calgary (PhD). In addition to birds, Dorothy is also passionate about teaching and very honoured to have the opportunity to work at teaching-focused institution, Mount Royal University.
Plenty of money is being poured into the effort of bringing back to life a selection of extinct animals, including the wooly mammoth and the Passenger Pigeon. The justification is ecological restoration, but does this make sense?
Speaker: Jay Ingram
Bio: Jay Ingram has hosted two national science programs in Canada, Quirks and Quarks on CBC radio and Daily Planet on Discovery Channel Canada. His 19 books have been translated into 15 languages. Jay has six honorary degrees and is a member of the Order of Canada. From 2005-2015, he chaired the Science Communications Program at the Banff Centre, he is co-founder of the arts and engineering smashup called Beakerhead in Calgary, and he is one of the hosts of the podcast Anthropomania.
Register Opens December 7
Fighting in Tyrannosaurs: Evidence from scars on bones
Abstract: Tyrannosaurs were the largest predators in dinosaur dominated ecosystems across North America and Asia during the Late Cretaceous. Due in part to their size and geographic/temporal occurrence, tyrannosaurs have one of the best fossil records of theropod dinosaurs. An intriguing aspect of these fossils is the common occurrence of healed (or partially healed) bone scars, caused by tooth marks, preserved on their skulls. Multiple lines of evidence, including embedded teeth, suggest these bites were inflicted by other tyrannosaurs, likely members of the same species.
This talk is a “what we know, and how we know it” approach, documenting the occurrence, frequency, and morphology of these bite marks through a growth series, and across multiple tyrannosaur species. This preserved behavioural evidence helps to reconstruct aspects of intraspecific aggressive behaviour in tyrannosaurs, and across a broader sample of theropod dinosaurs.
Bio: Dr. Caleb Brown, PhD. Caleb is originally from northern British Columbia, but grew up in Red Deer, Alberta. Growing up in Central Alberta, Caleb was exposed to Alberta’s fossil history at a young age and never turned back. After completing his BSc and MSc at the University of Calgary, focused on Dinosaurs, Caleb moved to Ontario to pursue a PhD in the Department of Ecology and Evolutionary Biology at the University of Toronto. For his dissertation, he studied the variation and evolutionary morphology in horned dinosaurs from Dinosaur Provincial Park. He returned to Alberta in 2019 to become the Curator of Dinosaur Systematics and Evolution at the Tyrell museum in Drumheller.
Caleb’s research interests focus primarily on the palaeobiology and evolution of dinosaurs, particularly ornithischians, concentrating on the growth and evolution of "cranial ornaments". He also has a strong interest in taphonomy, specifically the role of depositional environments in shaping our understanding of ancient ecosystems. Over the years, Caleb has conducted fieldwork in Alberta, Saskatchewan, the Northwest Territories, China, and Mongolia.
Register Opens January 4, 2023