BBC has been airing their 'Sherlock' TV series since 2012 and people have been raving about it, but I joined in late.  That said, I've been as hooked as anybody who started watching the series from the first episode.  While Sherlock may be the quintessential king of deduction, different people pick up different things.  I pick up details such as aircraft tail numbers and contents of displayed newspaper articles.  Here are the birds that have costarred with Benedict Cumberbatch, on BBC's Sherlock, so far:

Season 2: Episode 1: The Scandal in Belgravia Bird spotted: Aerospatiale AS-355F-1 Ecureuil 2 Tail Number: G-DFOX Manufacturer: Aerospatiale (now Airbus Helicopters) Original image source: http://www.airliners.net/search/photo.search?id=1959264

Season 3: Episode 3: His Last Vow Bird spotted: Eurocopter AS-350B-2 Ecureuil Manufacturer: Eurocopter Group (now Airbus Helicopters) Tail number: G-VGMG Alternate image on Airliners.net: http://www.airliners.net/search/photo.search?id=1994269

Season 3: Episode 3: His Last Vow Bird spotted: Cessna 650 Citation III Tail number: OY-EDP Manufacturer: Cessna Aircraft Company, USA Alternate image on airliners.net: http://www.airliners.net/search/photo.search?id=1362451