'The Magic Lake' - Presa Vicente Aguirre

This large reservoir in Hidalgo state is a magnet for wintering wetland birds.  I visited it last weekend, and things got a bit silly.  It's a sizeable body of water, and obviously full of fish - supporting a large fishing community and hundreds of American White Pelicans.

American White Pelican

One particular corner of the lake was full of birds.  In a small space, I found 600 White-faced Ibis (harbouring 3 rare White Ibis), 54 Great Blue Herons, similar numbers of Great Egrets and Snowy Egrets, 2 Little Blue Herons, several hundred Neotropic Cormorants (as well as 6 rarer Double-crested Cormorants), 10 species of ducks (including hundreds of American Wigeons, Green-winged Teals, and some Lesser Scaup), and the constant presence of hunting Ospreys.

White Ibis 

The Pelicans come into the fishing boats, with Eared Grebes and other waterfowl, allowing exceptionally close views..

Presa Vicente Aguirre is located between the towns of Huichapan and Ixmiquilpan.  It's about 1hour15minute drive from Tequisquiapan, but certainly worth a visit.