A tale of two sparrows. Today we left South Padre Island, our home for the previous three days, and headed south-west towards the Rio Grande. Our first unscheduled stop was at the recently created South Texas Ecotourism Centre – a huge restoration project of the Bahia Grande. Lots of good stuff including a slightly odd looking Spotted Sandpiper in winter plumage and a Common Yellowthroat. But perhaps the best wildlife action was the ‘rattler’ which Nicola came across in the car park! We then headed for Palo Alto where in 1846 a battle between the US and Mexico redefined the border between the two countries. In the leaflet describing the events it says ‘The US fought for the Rio Grande because of “manifest destiny” – the idea that the US had the right to expand its borders and spread democracy across North America. Northern Mexico was in the way…. Palo Alto serves as a reminder of the ongoing, complicated relationship between the two countries.’ Ring any bells? Anyway I digress. This unique landscape is also home to two range-restricted sparrows. Botteri’s, which only has a toe-hold in the Lower Rio Grande valley and south-east Arizona, and Cassin’s with a slightly bigger range, reaching into New Mexico, Colorado and Oklahoma. They look rather similar. We saw them both well, within ten minutes walk of the visitors centre. We spent the afternoon at Estro Llano State Park – looking for and finding Grove-billed Ani. We also came across five Wilson’s Phalarope in a melee of shorebirds. As we were leaving the reserve a superb male Blackburnian Warbler appeared in the trees above us. The major upset of the day, which I only discovered when I came to download my photos, was that the camera had been on the wrong setting all day and I had no recognisable images 😦 – fortunately Jane did, so these are all courtesy of her.