Sol y Sombra: Easter Monday in Collserola
In summer this small stony field overlooking the valley of Sant Just turns into a fennel jungle. In spring it’s a magic carpet of Sweet alyssum and Field marigolds, with scarlet poppies woven in. There’s a zest of fresh fennel as new sprigs sprout among the brittle sticks of last year’s crop. Painted Ladies (Vanessa cardui) spread their wings on the flowers, as flat as mortarboards.
On the grassy slopes nearby, light is glancing off the Cleopatra butterflies (Gonepteryx cleopatra) that float among the Crimson peas. I always hope that one will open up while feeding. They never do, of course, but on this sunny April day the male’s orange blush is visible through translucent wings.
Grey-leaved cistus is in flower everywhere, liberally scattering pink petals. Lavender is blooming alongside the thyme. Appropriately for Easter Monday, I find a Tassle Hyacinth (Muscari comosum). They’re known as Nazarenos in Spanish, named after the cone-headed penitents that march in Easter processions, often in sombre purple gowns.
Down a narrow shady path, periwinkles star the ground, filling every available space. Common Smilax has shiny new leaves and fresh tentacles, itching to cling. Glossy pale green leaves of Black spleenwort (Asplenium adiantum-nigram) loom out of the shadows. A wren scolds loudly, despite a beakful of nesting material.
Collserola: guided walks
It’s the time of year for unusual sightings in unexpected places. Recent observations recorded on 
Shortly after being born, this year’s brood of Peregrine falcon chicks were stolen from their nest in one of the Sagrada Familia towers. The robbery took place out of range of the web cam installed. Visitors have no access to this tower, but there are always plenty of workers milling around, since the Sagrada Familia is still under construction. Eduard Durany, responsible for monitoring Barcelona’s Peregrine falcons, emphasises the need for better security. Last year suspicious individuals were spotted trying to take food up to the falcons, who fetch a high price on the black market. After the theft, two chicks born in a wildlife recuperation centre were placed in the nest, but sadly the intended foster parents rejected them. See also the report on the ringing of 
After considerable procrastination, 
The areas of Barcelona nearest to the Collserola hills are now quite used to visits from the natural park’s thriving boar population, particularly at the end of summer when the ground is rock-hard and food supplies scarce. But on Saturday night a family of boars was seen trotting through Gràcia, a central barrio of the city, accessible only after crossing an extremely busy ring road. The same family has been observed this August exploring Gaudí’s Güell Park. There’s a 
