Here are 2 websites for John Spenser an avid birder who lives in Baja & has taken a couple birding tours to Costa Rica. His websites are easy to navigate & he has a lovely assortment of bird pics. There's a link to his email & I'm sure you can ask about tour companies. I think he used Overseas Adventure Tours for both trips. http://www.bajajohn.com http://www.bajabirder.com

Carol in Central Oregon, USA