Ongava Research Centre Blog...

2016- Week 44
- (Added 16. Oct. 2016 - 09:12)

We often see antelope with crooked horns, but rarely any effect that is as extreme as is seen in this Oryx. Why do some individuals have asymmetric horns? One hypothesis is that this results from a developmental instability arising from an early parasitic infection. Oryx females with horn asymmetries were found to be in less good condition, and out-competed at waterholes. Subsequently they were less likely to breed. Similarly, males with horn defects were found to have less access to reproductive females. So not too promising a future for this individual…

2016- Week 43
- (Added 9. Oct. 2016 - 11:00)

So, to last week's stolen camera... Very fortunately, I found the camera about 50m from the trap array – face down in the dust, but still working! (Well done, Mr. Bushnell). So we were able to review the images taken during the incident…


Here goes the lid…

Now the obligatory selfie!

And one of my friend – rather cheekily sitting on the trap array pole…

2016- Week 42
- (Added 2. Oct. 2016 - 11:00)

The perils of camera trapping! I arrived at this remote trap array to find that the left hand trap had completely disappeared. The lids of the security boxes are secured with twisted wire, and can be quite difficult to remove… The culprits will be revealed next week!

2016- Weeks 40 & 41
- (Added 25. Sep. 2016 - 11:00)

A frustrating few weeks of very little internet connectivity! I spoke a few weeks ago about using mark-recapture statistics for carnivores, and how one needs to be able to identify marks. Here’s an excellent example of an image of a black-backed jackal. That coat pattern with white / black vertical stripe is unique to this individual, and hence we can track movements across the reserve. Now we need them all to stand still in front of our camera traps and be photographed in this excellent low light!

2016- Week 39
- (Added 11. Sep. 2016 - 08:53)

A few weeks ago (W33) we showed you pictures of African Hawk-Eagles Aquila fasciatus, comparing immature and adult plumage. In most eagles, the immature birds have some form of intermediate colouring. In the case of Verraux’s Eagle Aquila verreauxii, the juveniles have a mottled pattern – as seen on this very nice camera trap picture of a sub-adult taking off after taking a drink. Note the Tawny Eagle Aquila rapax in the background. 

««« ««  1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | [...]  »» »»»

discovery is in our nature

Sponsored By...

Philadelphia Zoo Anthony Cerami and Anne Dunne Foundation West Midland Safari Park Premier Tours Wilderness Safari