Presa de la Constitucion, San Gil, Queretaro

An evening walk around a very full Presa de la Constitucion with Paul Bentinck last Thursday was fairly productive despite the water levels being too high for any waders.

It's a great spot for Herons, and we locked onto several Great Blue Herons and a Green Heron as well as all 3 Egrets and about 50 Black-crowned Night Herons (mainly juveniles).  The Herons tend to congregate in the marshy area of the Presa near the Fiesta Americana hotel.  Also in this area we found a Northern Jacana, some hunting White-tailed Kites and an Osprey, whilst in the rushes were some Common Yellowthroats.

Many of the wintering warblers have arrived in Queretaro now, and we saw and heard lots of Yellow-rumped Warblers and Wilson's Warblers, as well as a migrating Yellow Warbler.  A flock of Groove-billed Anis entertained us, and other highlights included a stunning male Hooded Oriole (as well as several Black-backed) and a Great Kiskadee (rare in this part of Mexico).

Broad-billed Hummingbird.  We also connected with the endemic Violet-crowned