Some peruvian ID’s
In August I made a birdwatching tour through much of central and southern Peru. But of course not only birds were recorded, however I’m much better with those, than with rodents or mouse opossums, especially since I don’t have very good identification guides for mammals.
So I’m hoping for your help
A trip report will be coming soon
I’m looking forward to your answers
Edit: I had messed up some IDs (like the Opossums) and also had a look at HMW for the dolphins and now changed a few ID’s
I agree about the dolphins (or, rather, don’t see any reasons to disagree).
The small opossum is tricky as you can’t tell the size or dorsal color from the photo. Of the species known or possible there, I think Marmosa macrotarsus, M. demerarae, M. regina and Gracilinanus agilis have darker underparts; M. andersoni, M. lepida and Marmosops noctivagans have dark tail tips. This leaves Marmosops bishopi and M. impavidus; the former has pale cheeks and the latter red cheeks. Yours seems to have pale cheeks 🙂
The Junin mouse looks like Akodon juninensis (very common at Lake Junin, assuming I identified them correctly). The other two look like Phyllotis xanthopygius, also common there.
Hi Mathieu, I sent this to Fiona Reid who said your Woolly Opossum is indeed C. lanatus and she might be able to get back to you on the mouse once she has checked in a book or two.
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Your “Delicate Slender Opossum” looks like a Brown-eared Woolly Opossum to me…