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Tara Chestnut, PhD @TCastanea
, 17 tweets, 15 min read Read on Twitter
Coyote and Virginia opossum last shared a common ancestor 160 million years ago… #2018MMM
Coyotes are wild dogs (canids) native to North America, closely related to gray, eastern, red and coy wolves. Hybridization and genetic admixture may be facilitated by the fact that they diverged relatively recently.… @WildCanid #WhyNotWoyote #2018MMM
Weighing in at 32 to 95 stoats (7-21 kg, 18-44 lb) male coyotes are slightly larger than females, which scientists call sexual size dimorphism. Coyotes from the NE are larger than in the west… #NoWay #YesWay #StoatsAsMeasurements #2018MMM
Coyotes are highly adaptable & live in very diverse ecological settings including towns and cities. They are omnivorous, eating plants, animals & carrion. *including 20 of my 21 chickens in the last year #TrueFact #WorstFarmer #RIP #AltMammals… #2018MMM
Prior to 1700, coyotes were restricted to the prairies & desert areas of Mexico & central North America. Since colonization, coyotes have dramatically expanded their range north to n. Alaska and south to Costa Rica. #2018MMM…
The opossum is the only North American marsupial, arriving from South America in the Pliocene, when a land bridge joined the two continents (Gardner 1973) #PocketsAreHandy #2018MMM Credit: @smithsonian #TropicalResearchInstitute…
Since 1900, Virginia opossum has expanded its range to western North America. Opossums are poorly adapted for northern winters; their pelage is sparse and their naked tail and ears are frequently frost-bitten. #2018MMM…
In northern climes, females seldom live through more than one reproductive season or produce more than one litter per year so survival of juveniles is important for lifetime reproductive success in opossums. Repro occurs in winter/early spring. #2018MMM
This #UrbanJungle battle is along Interstate 90 near Snoqualmie Pass in Washington State, USA. Built 100+ years ago I-90 is a transportation lifeline btwn east-west parts of the state. It’s also a vital north-south wildlife corridor Photos: @wsdot #2018MMM
For nearly 15 years, @ConservationNW has coordinated the I-90 Wildlife Bridges Coalition, bringing diverse stakeholders together to advocate for safety improvements that will provide for landscape permeability for wildlife @WSDOT will complete the project by 2029 #2018MMM
Later, watch this documentary about the monumental project combining conservation, collaboration & innovation that led to the construction of NA’s largest wildlife crossings project combined with major improvements for motorists. @ConservationNW #2018MMM…
Coyote is out searching for roadkill, a pretty reliable food source along most major highways. Virginia opossum is out doing the same and hears coyote approaching. Opossums are known for playing dead when surprised but she hears coyote coming. #2018MMM
Virginia is on extra alert since she has young with her and doesn’t pause. She briefly engages and runs toward a nearby under-crossing #ThoseAreYoungOnesInHerPouch #2018MMM…
Coyote pursues then decides it’s not worth the effort. Virginia flees the playing field with perhaps the only litter she will ever produce #2018MMM…
Also, give opossums a brake. They can help reduce the spread of Lyme disease #RIP #2018MMM @CaryInstitute…
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