I owe the discovery of this new site to my friends Rob Rackliffe & Virginia Fairchild whose assiduous mining of E-Bird on our recent trip together for information about Rock Sparrow took us down this superb track. The turning onto the track off the A 372 (by Meson Los Alamillos restaurant) gives no indication of the delights in store. After passing several houses you continue through tall pine trees and drop down to the Chaparro de las Animas - a flat area in the flood plain of a small river (confusingly known both as the Rio Guadares & Rio Campobuche). This is a particularly good spot for looking for Iberian Grey Shrike both to west and east. Viewing from the 'elbow' on the A 374 opposite had previously been my prime site for this species but this is much better. In addition, other sought after species like Iberian Green Woodpecker and Rock Sparrow have been seen here (see E-bird lists here).
The track continues through pleasant open woodland until it drops down to the Llanos del Apeo. This flat grassy area here is a good site for Thekla's Lark. Park at the foot of the rocky massif here as the track worsens from this point onwards (and is apparently private as it reaches the small farm) so we parked near the small stream. This rocky ridge rises c100m above the plain (= llanos) and, as may be expected, is a superb location for Black Redstart, Rock Sparrow & Black Wheatear. We also had Bonelli's Eagle here soaring with the numerous Griffon Vultures. I also had a Large Tortoiseshell butterfly here in February. Regrettably, time did not allow walking further to the south-eat along the stream as the habitat looks very good and somewhere along the route there's a historic dolmen (OK not intersting to many but I was once a history teacher!). E-Bird lists this site under the name Las Alamos (further details of sightings can be found here). Although the Llanos de Libar (to which in theory at least you can walk to from here) remains my favourite site in Grazalema area, this is an excellent alternative

(Lagunas de los LLanos de Bonanza)
As I've recounted elsewhere, I 'found' these lagunas by zooming in on a patch of water I spotted whilst browsing GoogleEarth. At that time that resource included symbols which could be clicked on the bring up photos of the site. I clicked on one icon and when a photo of Whiskered Tern popped up I determined to visit the place asap. I called the place "Bonanza Pools" but it's since become better known as "Lagunas de Camino Colorado" (although the 'official name seems to be "Lagunas de los Llanos de Bonanaza" according to a new noticeboard there). Despite being a superb little site for wetland birds (particularly for getting stunning views of White-headed Duck and in recent years one of the few places your could find Red-knobbed Coot). Until recently it wasn't legally protected and was frequently used as a communal rubbish tip for agricultural waste. Large signs warning of heavy fines didn't necessarily prevent dumping but a new hide (see photos) has now been placed where the rubbish was mainly dumped. It doesn't help that much for seeing the birds which can all be seen equally well from the road but it's a useful shelter from the sun/rain and emblematic of the site's importance!

Los Badalejos between Benalup and Medina Sidonia has been my go to site for Little Bustard for some years largely because it's the closest regular site for them to my base in Alcala de los Gazules. My highest count there was 15 in 2023 but as many as 26 were seen there as recently as 2016 and I recall being told that 50+ were previously present in the area in the early 2000s. This species has suffered a catastrophic decline in recent decades with numbers falling by 70% between 1998 & 2018. This is an extinction level decline and, to judge by the rate of habitat loss, here and around Osuna (see below) has possibly worsened in recent years. Only a couple of years ago I saw three males chasing one another on the hillside in the photo above. Now it is covered by newly planted olive trees ...

This is a favourite site but something of a stretch from Alcala de los Gazules so I was delighted to stay in Osuna this February when exploring the area with Rob & Virginia. Quite apart from the birds, it's worth visiting the town for the many historic buildings to be found there. We stayed in an attractive hotel, Hotel Las Casas del Duque (see here), and our meal on the first night was in the equally attractive restaurant, Doña Guadalupe Restaurante. (see here) - one of relatively few open on Monday night.
We saw two droves of 20+ Great Bustards (from a & c although they're often visible from b) but only two Little Bustards but spotting Black-bellied Sandgrouse took rather longer. However, using the bridges over the abandoned AVE railway as tower hides thanks to Virginia's sharp eyes we eventually found a flock of 20+ birds - by far my largest flock here - from c. It was good to see a small flock of Lesser Kestrels haunting a ruined cortijo and very satisfactory to see a Merlin not far away although it was a disappointment to hear of a Lanner Falcon in the area a few days later. Other good birds included Iberian Green Woodpecker, many Spanish Sparrows, Black-winged Kite, a Stone-curlew, Greater Flamingo, Golden & Kentish Plovers and a Little Stint. The latter two were found at Laguna de la Ballestera (Lagunas de Lantejuela) which we reached via a maze of farm tracks as we searched for sandgrouse. It was pleasing to find a new designated car park and a hide here (see photos). We didn't have time to check the other lagunas to see if they now had any infrastructure for birding but were able to confirm that Laguna Verde de Sal no longer exists.
We checked Laguna de los Ojuelos from the SE 715 (e) and had an assortment of waders (Lapwing, Avocet, Green Sandpiper, etc) despite the distance. We drove down the Cañada Vereda del Alamillo [GPS 37.2981, -5.2538 (d)] to the railway line but the track onwards to the laguna looked in a poor condition so went no further. This was a mistake as friend navigated it successfully later that week and had good views of the birds we had struggled to see from a distance.
Until recently the rain in Spain hasn't been falling anywhere much at all, not even on the plains. To a great degree, the unprecedented heavy rain that caused so much loss of life last year was so fierce that much of it ran off the land without topping up reservoirs. However, it's still been significantly wetter than usual in recent months (and in the weeks following my visit) so not only are many reservoirs fuller than they've been for years but so too are the lagunas. It was good to see Laguna de Medina (see below) so full in February and better still to hear that Red-knobbed Coots have returned there. We missed Ferruginous Duck here but we found a pair of Ring-necked Ducks. A site that has fared even better is the Laguna de Tollos which has been bone dry for years so much so that the last time I visited the bed of the laguna was regularly being used by dog walkers. Better still, Red-knobbed Coots have been found for the first time in decades (see here for recent photos of this laguna).
Alcala de los Gazules
In recent years the El Aljibe visitors' centre off the A 2228 below Alcala de los Gazules has presented a sorry sight to passers-by. The venta here closed long ago, the gates have been invariably locked since Covid (at least) and the centre firmly shut with the buildings looking very unkempt. Happily, on my recent in February I found the centre had been spruced up and was, to my surprise, open (and thus the excellent exhibition available to visitors). Even if you're not interested in the area's history (and the displays are all in Spanish, of course), it's worth stopping to explore the adjacent Jardin Botanico. This small garden is a wonderful introduction to the plantlife of the Alcornocales and on hot days a shady respite from the heat. It also rings to the sound of many Nightingales.
Using E-Bird to locate target species is a tremendous bonus and certainly boosted the total of species (175+) seen during the week I was birding with Rob & Virginia. However, it can reduce the time 'off piste' looking for birds elsewhere. The only recent sightings of Marbled Duck were all at Brazo del Este but I was pretty sure we'd find them along the Guadalquivir. My hunch proved to be correct with three near Trebujena and six at Laguna de Tarelo. The latter site also nine White-headed Ducks and 38 Black-necked (Eared) Grebes (see here for the full list). The track around to the marismas remains open but I notice that there's a gate here (although it seems permanently tied back - see photo) so use the track at your own risk!