In our series on bird guides, so far, 131 profiles have been published. To start the interview, we asked each of them the same question: What is your favorite bird species?

Not surprisingly, given that our bird guides are from 50 different countries, there was very little overlap in the answers. A total of 128 species were mentioned, but only six species were mentioned more than once.

And more than once just means they were mentioned twice:

• Bee Hummingbird
• Cuban Tody
• Doherty’s Bushshrike
• Pel’s Fishing Owl
• Resplendent Quetzal
• Shoebill

If I were in a better mood, I would now explain how this little overlap demonstrates the amazing and fascinating variety of the avian world.

Instead, I will just give you the names of species that were mentioned just once:

African Crowned Eagle; Alpine Swift; American Flamingo; Andean Condor; Andean Cock-of-the-rock; Bar-bellied Pitta; Barred Buttonquail; Bay-breasted Cuckoo; Bengal Florican; Bicolored Antpitta; Black-and-white Monjita; Black-bellied Seedcracker; Black-billed Capercaillie; Black-capped Kingfisher; Black-throated Tit; Black-backed Grosbeak; Blue-headed Quail-Dove; Bornean Banded Pitta; Bornean Bristlehead; Bugun Liocichla; Chaco Owl; Chestnut-headed Partridge; Chinese Monal; Cinereous Vulture; Cock-tailed Tyrant; Common Raven; Crested Tit-warbler; Ceylon Bay Owl; Drakensberg Rockjumper; Egyptian Nightjar; Egyptian Plover; Esmeraldas Woodstar; European Honey-buzzard; Eurasian Bullfinch; Eurasian Roller; Fire-tailed Myzornis; Florida Scrub-Jay; Florida Crested Caracara; Glistening-green Tanager; Golden Eagle; Gorgeous Bushshrike; Great Blue Turaco; Great Gray Owl; Great Hornbill; Great Philippine Eagle; Green-breasted Pitta; Green-bearded Helmetcrest; Green-tailed Towhee; Gray Hawk; Gray-throated Chat; Grey-crowned Crane; Hooded Siskin; Hoopoe; Iberian Imperial Eagle; Indigo Flycatcher; Ivory-breasted Pitta; Kirtland’s Warbler; Lear’s Macaw; Loggerhead Shrike; Magellanic Woodpecker; Maroon-fronted Parrot; Marvelous Spatuletail; Mountain Tailorbird; Multicolored Tanager; Nile Valley Sunbird; Narina Trogon; Oahu Elepaio; Orange-breasted Green-Pigeon; Orange-breasted Laughingthrush; Oriental Scops Owl; Ornate Hawk-Eagle; Pennant-winged Nightjar; Peregrine Falcon; Plate-billed Mountain-Toucan; Red-and-yellow Barbet; Red-billed Firefinch; Red-billed Tropicbird; Red Bird-of-Paradise; Red-cockaded Woodpecker; Red-ruffed Fruitcrow; Red Warbler; Red-backed Shrike; Reeve’s Pheasant; Ring Ouzel; Rockrunner; Rufous-tailed Jacamar; Rufous-vented Ground-Cuckoo; Sarus Crane; Scaly-breasted Illadopsis; Secretarybird; Semi-collared Flycatcher; Sword-billed Hummingbird; Spotted Palm Thrush; Spoon-billed Sandpiper; Sri Lanka Frogmouth; Sri Lanka Green-Pigeon; Straw-headed Bulbul; Sulawesi Dwarf Kingfisher; Sumatran Ground-Cuckoo; Swallow-tailed Kite; Syrian Woodpecker; Tamarugo Conebill; Three-banded Courser; Three-toed Woodpecker; Uirapuru; Ward’s Trogon; White-crested Laughingthrush; White-tailed Cisticola; White-tailed Kite; White Wagtail; White-winged Duck; White-browed Tit Warbler; Whitehead’s Trogon; White-backed Woodpecker; Western Tanager; Whooping Crane; Yellow-eared Parrot; Yellow-headed Picathartes; Yellow-shouldered Amazon Parrot; Yellow-throated Toucan; Yucatán Jay; Zapata Wren.