Our trip to Tayrona and Minca near Santa Marta in the north of Colombia was excellent for seeing spectacular wildlife. Best of all for me was finally getting to see monkeys in the wild. There are some species (I don't know what) on the in-laws farm, but I've not seen them there yet. We saw Red Howler Monkeys, the loudest land animal on Earth, in Tayrona National Park, near to the main trail. They were fairly calm and obliging and I had enough time to get the tripod sorted and get some digiscoped shots. I also took a short video of one individual which you can see on this link. Red Howler on Youtube. We also saw Red Howlers in the Proaves El Dorado bird reserve.
In Tayrona we got great views of the critically endangered Cotton-top Tamarin monkey (called Mono Tití in Colombia), a species endemic to Colombia. They were very curious and came quite close but sadly without the 'scope, the pictures were useless.
Also a great new bird to see was the Whooping Motmot, on the fruit feeders at Hotel Minca, where they also have many hummers on their feeders (when they've filled them!). Sadly I didn't get better shots of these birds.
El Dorado reserve was fantastic. It was empty of people because we were "out of season" but it is packed with endemic species all year round. There is no doubt it is one of the best sites in Colombia if not the world for endemic birding - 19 species that only occur in this area. Sadly, the weather didn't help the birding or taking pictures but I did see amongst other birds the endemic Santa Marta Brush-finch (easy to see there), Colombian Brush-finch (on the compost heap), White-tailed Starfrontlet & Santa Marta Woodstar hummers and White-lored Warblers as well as other colorful "megas" like Emerald Toucanet, Masked Trogon and Strong-billed Woodcreeper. I felt very happy despite just a few hours on the reserve in poor weather. No doubt you could add dozens more great birds with a longer visit. The road is terrible though, it takes nearly 2 bone-shaking hours to get there from Minca. Probably best to stay at the lodge which looked excellent, and the food was great.
Overall it was a fantastic trip with the monkeys and over 50 new species of birds for me. The only really problem was lack of time!