I had the pleasure of birding with Marilyn and Leonardo a couple years ago and they were amazing guides. Their love for the birds shines through and they are passionate about the Maroon-fronted Parrots which was my #1 target. They have amazing attention to detail and it was such a joy to get a series of eBird lists emailed to me so all I had to do was add them to my account. We spent a very long day and they didn’t give up until we had all the birds that were my major targets. Lovely couple to hang out with too!

Tara T

I am one of the people who likes jays and goes around the world looking for them. The Mexican Jay and Green Jay were at the top of my list, and I’m very thrilled that I was able to see them. I spent 3 days with Marilyn and Leonardo. They even took me to taste authentic Mexican food. Without a doubt, I will plan to go with them again to see the majestic Maroon-fronted Parrot.

Mustapha Abdul-Rahim

I birded with them for 3 days and we never saw or heard a bird they couldn’t identify!! They are simply amazing at what they do!! They are also bilingual in Spanish and English making things even better!! I can not recommend them more!!

David Hafernik

They are fantastic guides! They are experts and truly spread their passion for observing birds in their habitat, in addition to being able to enjoy nature in those beautiful places. The best in Monterrey, Mexico.

Brenda Cardoza

Este año participé con Kingfisher Birdwatching Nuevo León en el Global Big Day. Fue un día lleno de experiencias agradables, terminando con 125 especies observadas gracias a los extraordinarios guías Marilyn Castillo y Leonardo Guzmán, quienes le dan un plus a la observación explicándote sobre el hábitat de cada ave, características y distribución. Aprendes un montón. Si quieren salir a observar aves no lo duden, ellos son los mejores.

Nancy Fernández

Highly recommended!! Marilyn knows her stuff, she brought our group to hotspots where we had the best chance at seeing our target birds and she delivered! Bonus points for an unexpected field of long-billed curlew. Thank you for making our first Mexican birding experience so incredible, Marilyn!

Laura & Brad Nelson