Always a species to get the pulse racing, Caspian Tern has been seen with greater frequency in Britain in recent years. But what is driving this rise in records? Josh Jones takes a closer look.

A chance discovery in Surrey has led to a new technique for monitoring Black Hairstreak, one of Britain's rarest butterflies, after an amateur naturalist found its caterpillars glow brightly under ...

Find out where and when this bird was seen. Subscribers can access more detailed information, including site specifics, a map and finder's comments. If you have a photo of this bird and would like it ...

Atlapetes crassus Taxonomy Version: IOC 10.2 Search Taxonomy Details Rank: species Authority: Bangs, 1908 IUCN Category: Not Evaluated Taxonomy Ranking Level Rank ...

Myiopagis gaimardii Taxonomy Version: IOC 10.2 Search Taxonomy Details Rank: species Authority: (d'Orbigny, 1840) IUCN Category: Least Concern Taxonomy Ranking Level ...

Parus cinereus Taxonomy Version: IOC 10.2 Search Taxonomy Details Rank: species Authority: Vieillot, 1818 IUCN Category: Not Evaluated Taxonomy Ranking Level Rank ...

Turdus albocinctus Taxonomy Version: IOC 10.2 All Ranks Domain Kingdom Subkingdom Phylum Subphylum Superclass Class Subclass Infraclass Superorder Order Suborder Infraorder Superfamily Family ...

Penduline tits are not true tits (Paridae) but are vaguely similar in appearance and share their namesakes' agile foraging habits. Their common name comes from their gourd-like nests that hang like ...

Glaucis hirsutus Taxonomy Version: IOC 10.2 Search Taxonomy Details Rank: species Authority: (Gmelin, JF, 1788) IUCN Category: Least Concern Taxonomy Ranking Level ...