The Spectacled Owl (Pulsatrix perspicillata) can be found in many different types of habitats including tropical rainforests, riparian corridors along streams, savannah woodlands, and even in the trees surrounding coffee plantations! Geographically, spectacled owls occur in Central and South America. [Photo by Grace Davis and caption by Maggie Creamer] Reference MikRamírez-Llorens, P., & Bellocq, M….
Author: The Ethogram
The official blog of the UC Davis Animal Behavior Graduate Group.
Sunday Sketch: Red Squirrel Rattles
Did you know that North American red squirrels (Tamiasciurus hudsonicus) announce territorial ownership by making vocalizations called rattles? Recently, a study found that short-term stress from capturing and handling squirrels affected acoustic structure of these vocalizations. This research reveals that rattles may also carry important information about squirrel physiological condition. Sketch contributed by Rachael Coon and…
Sunday Sketch: Kangaroo Farts
In the 1970s and 80s, researchers thought that kangaroos didn’t fart, or at least that they hardly emitted any methane gas. Methane is naturally created by the bacteria that lives inside an animal’s gut, helping them to digest plant materials. Early findings indicating that kangaroos emit little methane made scientists think that they had special…
Field Frame Friday: What’s in a song?
The calls of the yellow-rumped cacique (cacicus cela) are significant in social contexts. For example, males counter-sing to establish the dominance hierarchy, songs can be used in territory defense or agonisitic encounters, as well as alarms to predators and to initiate flock cohesion. [Photo by Grace Davis and caption by Maggie Creamer] Reference Corwin, P….
Sunday Sketch: Purple Sea Urchins
Purple sea urchins (Strongylocentrotus purpuratus), believe it or not, are actually closely related to humans as revealed by genomic sequencing. Sea urchins, in general, have a range of lifespans, and purple sea urchins have one of the highest with a maximum of more than 50 years! This makes sea urchins relevant for a variety of aging research. …
Field Frame Friday: High five! Oops! I mean high four?
Even though the black-handed spider monkey (Ateles geoffroyi) has limited dexterity in handling, since they do not have a thumb, they still show strong consistency and preference for handedness (aka being right or left handed). Their handedness preference also varies between individuals. [Photo by Grace Davis and caption by Maggie Creamer] Reference Motes Rodrigo, A.,…
Animal movement and community engagement: a toolkit for marine conservation
According to a United Nations report produced in 2019, the world is at risk of losing up to 1 million of the estimated 8 million plant and animal species on earth [1]. Extinction is a natural phenomenon; however, this number is significantly higher than expected if extinction were due to forces of nature alone. Instead,…
Sunday Sketch: Flies and Stripes
For years, humans have postulated and told folktales to answer the question, “Why did zebras get their stripes?” Now scientists may have an answer: pest control! While the stripes may not deter biting flies from afar, researchers found that flies failed to make controlled landings on the zebra by either failing to decelerate and bumping…
Field Frames Friday: “Empty Nesting”
Both sexes of the Chestnut-mandibled toucan, or Swainson’s toucan, (Ramphastos ambiguus swainsonii) help with incubating the eggs and raise the chicks together. Generally, females will lay just about 2 or 3 eggs at a time in an old decayed tree or an abandoned woodpecker’s nest. [Photo by Grace Davis on Barro Colorado Island, Panama; Caption…
Field Notes: IQ tests for Urban Monkeys – How intelligent are the monkeys of Malaysia?
It’s humid and hot, and the taxi has finally arrived at the attraction of the day for this foreigner’s vacation – a Hindu temple situated in a lush Malaysian rainforest. As you pay the taxi driver and get out of the car, you notice a visitor approaching you from the corner of your eye. You…
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