07 de marzo de 2019

Southernmost coastal fisher since Joseph Grinnell

Fishers (Pekania pennanti) are a forest-specialist mesocarnivore and are a species of special concern in California (CDFW 2015a, 2015b). In comparison to the Sierra and Cascade populations, the coastal population is under-studied and the southern extent of its range is not clearly documented (Zielinski et al.

We documented a fisher at the southern edge of Lake County. This is the southernmost documented fisher sighting since Joseph Grinnell. Grinnell, in his review of fisher locations in 1937, noted that fishers may extend as far south as Marin County, but had no definitive proof.

The full documentation of this sighting is available at http://publish.illinois.edu/maxallen/files/2019/01/Allen-2015-Fisher-Range-Expansion.pdf

Ingresado el 07 de marzo de 2019 por maxallen maxallen | 1 observaciones | 1 comentarios | Deja un comentario

05 de marzo de 2019

American Martens in the Apostle Islands

This photo is part of our discovery of American martens on the Apostle Islands. Martens were reintroduced to the Apostle Islands by the State of Wisconsin in the 1950's, but were not seen after the 1960's. Using camera trapping over the past few years we detected American martens at 28 of 87 functioning camera trap sites on 5 of 13 monitored islands and documented the existence of American martens in APIS in Wisconsin for the first time in over 50 years.

Full story: http://publish.illinois.edu/maxallen/files/2018/11/Allen-2018-Marten-Discovery-Apostle-Islands.pdf

Ingresado el 05 de marzo de 2019 por maxallen maxallen | 1 observaciones | 0 comentarios | Deja un comentario

02 de diciembre de 2018

Fresh Puma Kills

This observation is rather typical when investigating fresh puma (also called mountain lions) activity (using data from GPS collars). While hiking in on the nearby ridge I found an older bed (about 36 hours old) with fresh scat, evidence that the mountain lion had indeed been there. I then began searching more carefully and soon found the remains of the deer that the puma (82M) had killed and eaten. He also rested for some time while apparently grooming (note the large size of the bed compared to a sleeping bed) in a bed with a scenic view (see second photo). Note how the bed is dry while the surrounding area is wet, it had stopped raining 30 minutes before as I began my hike into the area...

Ingresado el 02 de diciembre de 2018 por maxallen maxallen | 1 observaciones | 0 comentarios | Deja un comentario