Besides, my immediate priority at the sanctuary is to get past the stern-looking young volunteer standing sentinel at the canyon&rsquos entrance. &ldquoOne at a time,&rdquo the redhead warns, flicking me a glance as the queue of tourists moves ahead. Matter-of-factly, she proceeds to strip me of my hat, scarf, sunshades, waist pouch and camera, making it clear that she knows her wards well enough to heed their particular aversions, however cute may be the names they answer to not Matilda, Cleo, Tom or Sylvester certainly, but Herfa, Techo, Weiha and Payu, among others, chosen for that afternoon&rsquos show from a total of 34. Then I&rsquom in.