This 2012 video is called Glossy Ibis at Chapel Amble – Wildlife in Cornwall.
From Wildlife Extra:
Glossy ibis flock arrives at Slimbridge.
Glossy ibis are very rare in the UK, usually just 1-2 turn up every 5 years, so staff at the Wildfowl & Wetlands Trust (WWT) were astounded when 17 Glossy Ibis turned up on its reserve at Slimbridge, Gloucestershire, on Friday 20th April – and they are showing no signs of wanting to move on.
News of the sighting at WWT Slimbridge has spread fast with hundreds of bird enthusiasts from all over the country flocking to the centre over the weekend to catch a glimpse of the birds.
Glossy Ibis are extremely rare in this country. After spending the winter in Africa, the birds migrate to Mediterranean climes such as Southern Spain and Greece to breed during Spring and Summer.
Occasionally the odd one or two will stop off in the UK, but to have such a large flock here is almost unheard of.
White faced ibis: here.