In May 2010, we utilized the services of Manakin Tours to plan and carry out a birding tour beginning in Bogota, proceeding through the Magdalena Valley, and ending in Santa Marta.  Eduardo and his future wife Andrea did an excellent job of planning all of the logistics of the tour, and then during the tour, of making sure that all of the transportation and other aspects of the tour ran very smoothly.  The day to day attention to detail was very impressive, making the tour as comfortable as possible while maximizing our time in quality birding areas.  In the field, Eduardo did a superb job of finding our target birds and helping us see them well, and he has an excellent system for digital recording and playback.  I was amazed at the number of Colombian endemic and almost-endemic birds that we saw, and could not have asked for a more talented guide.  Eduardo has detailed knowledge of the birding sites, and has actually done field research in several of them (as has Andrea).   He has a good rappoire with the local park guides and rangers, which gave us up-to-date information on target birds and on field conditions within each park.   We will certainly be utilizing the services of Manakin Tours again, and highly recommend them for dependable bird tours with detailed logistical planning.