On this page you can find an overview of all the blog posts that I have written over the years.

  1. How strong is reproductive isolation between Golden-winged and Blue-winged warbler?
  2. Across Asia and beyond: The evolutionary story of the Common Pheasant
  3. Genetic evidence for hybridization between Magellanic and Humboldt penguins
  4. The Pleistocene Arc Hypothesis explains the evolution of the Rufous-fronted Thornbird
  5. The Herring Gull complex is not a ring species
  6. Studying the global conquest of the Common Starling with haplotype networks
  7. A mallard mystery: Unraveling the genetic basis of green egg color
  8. The importance of taxonomy in saving the critically endangered Black-winged Myna
  9. The taxonomic story of the Stipplethroats
  10. A genetic test of the theory of island biogeography using the Fiji bush-warbler
  11. Exploring the speciation continuum of hummingbirds
  12. You only need one genome to unravel the demographic history of the Chinese Grouse
  13. How many rosy-finch species are there in North America?
  14. A new subspecies of Manx Shearwater from the Canary Islands
  15. Testing the gradient speciation hypothesis in New Guinea Kingfishers
  16. Rapid morphological evolution in the Silvereye: random processes or selection?
  17. Unraveling the genetic basis of adaptive traits in the endangered Hihi
  18. Bad news for the Brown Eared Pheasant?
  19. Human activities facilitate hybridization in Allen’s Hummingbird
  20. A scoring scheme to assess the reliability of bird hybrids
  21. A gene within a supergene: An estrogen receptor shapes the behavior of White-throated Sparrow morphs
  22. The phylogeographic story of a Manakin and a Bamboo Tyrant
  23. How the Common Starling conquered Australia
  24. The social network of hybrid quails
  25. Why are some parrots more colorful than others?
  26. Gene flow is an integral part of speciation in Beringian birds
  27. Genetic patterns along the South American dry diagonal: The case of the Narrow-billed Woodcreeper
  28. Where did all these penguins come from?
  29. The role of neutral mutations in adaptive evolution
  30. Did sexual selection drive the evolution of Gallopheasants?
  31. With or without gene flow? Studying speciation in the Grey-headed Bullfinch species complex
  32. More than meets the eye: How many species does the bird genus Dendrocolaptes contain?
  33. The evolution of the genomic landscape in Silvereyes does not follow theoretical predictions
  34. Black-and-white birds: The influence of climatic conditions on gull plumage
  35. A genomic perspective on the classic hybrid zone between Baltimore and Bullock’s Oriole
  36. Why do Robust Woodpecker, Lineated Woodpecker and Helmeted Woodpecker look alike?
  37. Admixture in Amazonia: Reconstructing the evolutionary history of the Pectoral Sparrow
  38. The role of hybridization in the domestication of geese
  39. Convergent evolution of immune proteins in tits, chickadees, and titmice
  40. The constrained evolutionary trajectories of White-eyes on the African mainland and its islands
  41. Why the “Red-breasted Meidum Goose” is probably not an extinct species
  42. Splitting the Long-tailed Rosefinch into a Chinese and a Siberian species
  43. How did the Ice Ages affect three Scrubwrens in the highlands of Papua New Guinea?
  44. Genomic study unveils the true identity of Brewster’s and Lawrence’s Warbler
  45. Isolated Icterids: Unraveling the evolutionary history of the Altamira Oriole
  46. The complex interplay between tRNA genes and transposable elements in bird genomes
  47. Unusually low genetic diversity in the Red-billed Tropicbird
  48. The magic of Fairywren hybrids
  49. How the Hooded Crow got its hood: A tale of two crows and a transposable element
  50. A genomic continuum from feral to wild Red Junglefowl in Singapore
  51. How did the Ground Tit get its long beak?
  52. Solving the genetic mystery of the mosaic canary
  53. Should I stay or should I go? Patterns of gene flow across land bridges in Southeast Asia
  54. Do male Hoopoes judge female quality by inspecting the color of her eggs?
  55. Solving the paradox of the great speciator on the Solomon Islands
  56. Intermediate color morphs of the Common Buzzard are most successful
  57. Misconceptions and regressions: The evolution of bird brains
  58. From the sky to the island: Flightless rail species converge on the same body plan
  59. Three bird species show how to travel between the Andes and the Atlantic Forest
  60. Mixing Motmots: A hybrid between Rufous and Amazonian Motmot in Brazil
  61. The genomics of local adaptation in Blue Tits
  62. Mitochondrial capture in the Chestnut Quail-thrush: Neutral or adaptive introgression?
  63. How many ancestral species gave rise to the domestic chicken breeds?
  64. The Great Speciator strikes again: Discovery of a Mangrove White-eye in Saudi Arabia
  65. Building bowers and phylogenies: Genomic study reconstructs the complex evolution of bowerbirds
  66. Following the Forests: How the Variable Antshrike spread around the Amazon
  67. Is prezygotic isolation more important than postzygotic isolation at the onset of speciation?
  68. A common species with a complex history: The evolutionary story of the Great Tit
  69. How and when did Frogmouths cross Wallace’s Line?
  70. Inferring introgression: Genomic study on hybridizing Darwin’s Finches highlights the importance of field observations
  71. Uncovering cryptic diversity in the lesser short-toed lark species complex
  72. Non-coding DNA drives the evolution of avian beak morphology
  73. Figuring out the origin of two Fire-eye Antbird species in the Atlantic Forest
  74. The speciation cycle of Taiga and Tundra Bean Goose
  75. Are we missing something? Exploring the diversity of white-eye species on the African mainland
  76. Blackcaps help to unravel the genetic basis of bird migration
  77. How many members of the Lesser Whitethroat complex breed in Iran?
  78. What drives avian speciation in the Amazonian floodplains?
  79. Selection on metabolism and memory in a moving Chickadee hybrid zone
  80. Surprisingly high genetic diversity in an island species: What happened to the Raso Lark?
  81. Genetic bridges: Medium ground finch functions as a conduit for gene flow between two other Darwin’s Finches
  82. The curious case of the Vaurie’s nightjar
  83. Colorful females, dull males and everything in between: the complex evolution of plumage patterns in the Pacific Robin
  84. Complicated Cotingas: Can we resolve any phylogeny by just adding more data?
  85. Loss of migration leads to speciation in the Fork-Tailed Flycatcher
  86. Do plumage patterns support the eleven subspecies of the Velazquez’s Woodpecker?
  87. Ready, set, speciate: The role of sex chromosomes in the divergence of Reunion grey white-eye morphs
  88. Crossbills show there is more to evolution than natural selection
  89. Solving the seabird paradox: How does genetic differentiation arise in highly mobile species?
  90. Splitting scimitar babblers: Genetics and morphology point to two distinct species
  91. Do rivers promote avian speciation in the subtropics?
  92. Captive-bred ducks are genetically swamping wild Mallard populations in eastern North America
  93. A suite of subfamilies: How to classify the estrildid finches?
  94. Do crows engage in extra-pair copulations to avoid hybridization?
  95. Taxonomy in flux: The story of three flatbills and a flammulated flycatcher
  96. Saving the Snowy Plover: How many conservation units should we protect?
  97. Can you deduce the activity patterns of owl species from their eye color?
  98. Black hoods or bright eyes: The evolution of plumage patterns in gulls
  99. A Caribbean connection: How thrushes conquered the world
  100. African adventures: Human-mediated hybridization between Common and Black-faced Impala
  101. Ancient DNA helps to place two extinct duck species on the Tree of Life
  102. Cryptic Crows: Genetic study uncovers a wide hybrid zone between American and Northwestern Crow
  103. Does migratory behavior affect genetic diversity in the Golden-crowned Kinglet?
  104. Phylogenetics in the genomic era: Reconstructing the evolutionary tree of rails (family Rallidae)
  105. Hybridizing hyenas and how to find them
  106. Conservation genetic in China: Comparing genetic diversity of Siberian and Sichuan Jays
  107. Figuring out the evolution of forked tails in Swallows and Swifts
  108. Choosy Snowcocks: How habitat preference can affect genetic population structure
  109. Woodcreeper species continue to exchange DNA until 2.5 million years after divergence
  110. Drum roll, please! The evolution of rhythm in Woodpeckers
  111. Did the New Zealand Rockwren ever occur on North Island?
  112. Let’s not hop to conclusions: Delineating species in the Rockhopper Penguin complex
  113. The peculiar genomes of Falcons
  114. Population Genomics of Mangrove Warblers: Looking for candidate genes in Costa Rica
  115. How mountains, rivers and hybridization drove the evolution of the Blue-crowned Manakin
  116. Shake your tail feather! Courtship displays and genetic analyses uncover extensive hybridization between Allen’s and Rufous Hummingbird
  117. Are there still “pure” Hawaiian Ducks?
  118. Beyond genetics: How different are Kentish and White-faced Plover?
  119. Different migration strategies contribute to reproductive isolation between Barn Swallow subspecies
  120. Babblers provide evidence for “speciation cycles” in the Himalayan-Hengduan Mountains
  121. Are there really two species of red panda?
  122. Ecological speciation in the saltmarshes
  123. Observations confirm intergeneric hybridization between Common Black Hawk and Red-Shouldered Hawk
  124. Choosing between Cerrado and Chaco: Which corridor connected the Andean and Atlantic forest populations of the Buff-browed Foliage Gleaner?
  125. The variable beak of the finch: How hybridization increases variation in beak morphology
  126. Contemplating Kingfishers in Indonesia: The story of a “Great Speciator”
  127. Isolation by distance, adaptation or environment: What explains genetic patterns in the Red-crowned Ant-tanager?
  128. Genetic study uncovers viability selection in the Imperial Eagle
  129. Reader’s Hybrids: Ducks and Geese
  130. Genomics on the Galapagos: Exploring the genetic diversity of Darwin’s Finches and their relatives
  131. A genetic model for puntuated equilibria
  132. Drawing lines between larks: How many species of Horned Lark are there?
  133. Genomic data uncover subtle population structure in the White-chinned Petrel
  134. Where did the Ecuadorian Creole Chicken come from?
  135. A mosaic hybrid zone between Scissor-tailed Flycatcher and Western Kingbird
  136. Explaining the pantropical distribution of kingfishers, bee-eaters, rollers, motmots, and todies
  137. The genomics of being a raptor
  138. A taxonomic riddle: Where does the extinct Canary Islands Oystercatcher fit in?
  139. A lesson in cladistics with the Plain-brown Woodcreeper
  140. Unraveling the origin of the Visorbearers
  141. White-throated Sparrows influence gene expression in their offspring
  142. Taking advantage of hybridization to find a migration gene in warblers
  143. Songbirds have an extra chromosome in their germline
  144. The crazy sex-chromosomes of the Larks
  145. Islands in the Andes: Are populations of the Plumbeous Sierra-finch in Ecuador genetically distinct?
  146. Multispecies hybridization among Thrushes (genus Catharus)
  147. Cultural evolution contributes to speciation in Crossbills
  148. Are crows on islands experiencing a mutational meltdown?
  149. Hybrid Honeyeaters in eastern and western Australia
  150. Sparrows illustrate the possible outcomes of hybridization: from a hybrid species to a mosaic hybrid zone
  151. D-statistics for Dummies: A simple test for introgression
  152. The evolution of feathers: How sexual selection set the stage for natural selection
  153. Promiscuous Pitohuis: Exchange of “toxicity genes” between poisonous birds?
  154. A hybrid in the making? Attempted mating between Sanderling and Broad-billed Sandpiper
  155. Pinning down the Shrike phylogeny
  156. Testing for gene flow between Torrent Ducks in Peru and Argentina
  157. Separating Sparrows: Species limits in the striped-sparrows (genus Rhynchospiza)
  158. Ecological speciation in the White-tipped Plantcutter
  159. How far did the hybrid zone between Hermit Warbler and Townsend’s Warbler move?
  160. The Caracara Conundrum: Where does the extinct Creighton’s Caracara fit in?
  161. North-south divergence within Godlewski’s Bunting coincides with the uplift of the Tibetan Plateau
  162. Analyses of museum specimens uncover hybrid jays in Brazil
  163. Asian Leaf Warbler might carry mitochondrial DNA of an extinct species
  164. The Smell of Speciation: Chickadees prefer the scent of their own species
  165. Is there a hybrid zone between subspecies of the Scarlet Macaw?
  166. Classifying Corvids: Peculiar phylogeographic patterns in the crow family
  167. More than meets the eye: Scientists discover several cryptic storm-petrel species
  168. How many times did Steamer Ducks lose the ability to fly?
  169. Genetic study reveals how four different sparrow species adapted to life in the salt marshes
  170. Adventures in the Andes: The Tantalizing Tale of the Torrent Duck
  171. These two White-eye species should be hybridizing, but they don’t…
  172. Genetic study uncovers a deep split within the Hooded Pitta species complex
  173. High levels of gene flow between different populations of North American Scoters
  174. Central-American Wood-partridges are older than expected
  175. Off-color Orioles: Hybrids or abnormal plumage patterns?
  176. Pecking in the Pyrenees: No gene flow across a hybrid zone between Eurasian and Iberian Green Woodpecker
  177. Back from the brink of extinction: The remarkable recovery of the Crested Ibis
  178. How many species of Red-shouldered Hawk are there?
  179. It takes two: The evolution of duets in New World warblers
  180. A philosopher claims species do not exist. He is wrong.
  181. Can Mandarin Ducks hybridize with other duck species?
  182. The social lives of quails: Why do California and Gambel’s quail hybridize?
  183. What’s for dinner? Rapid evolution of non-native frugivores on O’ahu
  184. Genetic study of the Mallard complex reveals extensive hybridization with little recent gene flow
  185. A Brazilian Brain-teaser: How did the hybrid zone between Rufous-capped and Bahia Spinetail form?
  186. Introducing another hybrid bird species: the Salvin’s Prion
  187. Spooky introgression in the African jungle: Bonobos hybridized with a “ghost” ape
  188. The more the merrier? My review on multispecies hybridization in birds
  189. Do grazing waterbirds surf the green wave?
  190. Hybridization with escaped falconry birds and nest poaching threaten Barbary Falcons on the Canary Islands
  191. The genetic legacy of population decline and recovery in the Red-cockaded Woodpecker
  192. Honey, I resolved the Meliphaga phylogeny!
  193. How do hybrid Tree Finches cope with parasites?
  194. Does hybridization between Nuttall’s and Ladder-backed Woodpecker result in gene flow?
  195. Genomic analyses point to speciation with gene flow in the Northern Saw-whet Owl
  196. What drives plumage evolution in woodpeckers?
  197. Hybridization and Tinkering: High levels of gene flow between Yellow-fronted and Red-fronted Tinkerbird
  198. East or West? Different populations of Red-necked Phalaropes use distinct migration routes
  199. Island formation drove penguin evolution
  200. Oh My Gosh! The complicated taxonomy of the Northern Goshawk superspecies
  201. The head of the finch: A small genetic region controls colour morphs in the Gouldian Finch
  202. Cartilaginous crosses: A short overview of hybridization in sharks and rays
  203. The evolution of bird coloration: Exploring the complex interplay between natural and sexual selection
  204. How to turn a Carrion Crow into a Hooded Crow (and vice versa)?
  205. Breaking Barriers: Low levels of gene flow among subspecies of the Grey Shrike-thrush
  206. Is the Great White Heron a distinct species?
  207. Species in the making: Genomic analyses reveal incipient speciation in the Ground Tit
  208. Museum specimens reveal phenotypic introgression in a Scrub-Jay contact zone [Guest Post by Devon DeRaad]
  209. The Niches of the Nuthatch: How local adaptation and competition have shaped the present-day distribution of the Eurasian Nuthatch
  210. An Egyptian Goose is not a goose
  211. Combinatorial Speciation: Reassembling of old genetic variation facilitates rapid speciation and adaptive radiation
  212. Mastering Malaria: The Hawaiian ‘Amakihi uses a variety of genes to combat avian malaria
  213. A Mitochondrial Mystery: Why are there two deeply divergent lineages in the Savannah Sparrow?
  214. Are Chinese indigenous chicken breeds genetically “polluted” by commercial broilers?
  215. Barking up the wrong species tree: How gene flow shaped canine evolution
  216. Tracing the origins of the giant raptors on New Zealand
  217. Chaffinches on the Canary Islands: A new subspecies on Gran Canaria
  218. More than one way: How the open vegetation corridor influences the evolution of South American birds
  219. Scrutinizing a Superspecies: Patterns of Gene Flow among Common, Long-legged and Upland Buzzard
  220. The genetic recipe for a bird-of-paradise radiation
  221. A Puzzle of Primates: Disentangling the complex evolutionary history of Baboons
  222. Hybrids all the way down: Interbreeding musk turtles in Alabama
  223. Are Mallards driving Black Ducks to genetic extinction?
  224. Which genes contribute to speciation and adaptation in grouse?
  225. Hybrid speciation in yeast: How one hybrid species gave rise to another one
  226. Has climate change moved the hybrid zone between Red-naped and Red-Breasted Sapsucker?
  227. Adaptation in Parrotbills fueled by standing genetic variation
  228. First report of hybridization in millipedes
  229. Can divergence in sperm morphology reduce hybridization in nightingales?
  230. Protecting Penguins: Exploring population dynamics in several penguin species
  231. Monophyletic Manakins? Not according to mtDNA…
  232. Crossing the Atlantic: How the Glossy Ibis colonized North America and hybridized with the native White-faced Ibis
  233. Hybridization with Painted Stork threatens the already endangered Milky Stork
  234. Doing it in the Dark: Hybridization in Bats
  235. A Little Brown Job: Unraveling the Chiffchaff complex
  236. Scientific Sherlocks: The Case of the Imperial Pheasant
  237. Why are more sex-linked genes flowing from Thrush into Common Nightingale? Exploring the faster Z-effect in birds
  238. Who runs the world? Hybrid zone dynamics in a bird species where females compete for males
  239. Hybridization contributes to rapid and repeated evolution of cave fish
  240. Are Snow Bunting and McKay’s Bunting different species?
  241. How healthy are juvenile eagle hybrids?
  242. Why do different populations of the Greenish Warbler sing other songs?
  243. Unraveling the history (or histories?) of the Red-bellied Woodpecker
  244. Flipping DNA: The role of inversions in avian evolution
  245. φοβερο! Hybrid dolphins in the Greek Seas
  246. Genetic population structure of the Black-billed Gull, with a hint of Red-billed Gull
  247. A hybrid between Black-browed Tit and Sooty Tit
  248. Looks can be deceiving: Parallel evolution of plumage coloration in wheatears
  249. Hybridization leads to emergence of a new sex chromosome
  250. A hybrid zone between subspecies of the Common Ringer Plover?
  251. How many hybrid bird species are there?
  252. Going with the flow: Gene flow from Chinese Spot-billed Ducks into Mallards
  253. Studying sperm success: A possible reproductive barrier between subspecies of the Long-tailed Finch
  254. Exploring the genomic landscape of wood-warblers
  255. Newly discovered hybrid zone between Colima and Virginia’s Warbler in Texas
  256. What selection pressure is acting on hybrids between Audubon’s and Myrtle Warbler?
  257. Crisscrossing Europe: The genetics of crossbills in the western Palearctic
  258. Are yellow-rumped warbler hybrids more susceptible to parasite infections?
  259. Mixing in the Marshes: King rail and clapper rail hybridize in Virginia
  260. Looking for genetic differences between Araripe and helmeted manakins in Brazil
  261. Salty Genes: Hybridization between saltmarsh and Nelson’s sparrow results in exchange of adaptive genes
  262. Where did all these fish come from?! A genomic perspective on the explosive diversification of cichlids
  263. The eagle has landed: Tracking the migration of hybrids between lesser and greater spotted eagles
  264. Wall lizards form hybrid swarms in German cities
  265. Pinpointing the position of a parrot hybrid zone in eastern Australia
  266. Ancient DNA study sheds light on domestication history of geese in Russia
  267. Got your mtDNA! Mitochondrial capture in Amazonian Jacamars
  268. Fascinating Finches: Patterns of Gene Flow in South American Siskins
  269. On the Origin of Pigeon Plumage Patterns: A Role for Hybridization
  270. Something smells fishy: Exchange of olfactory genes between cichlids
  271. High altitude hybrids: the story of Ruddy Ducks in Colombia
  272. Promiscuous pathogens: What if disease-causing fungi hybridize?
  273. It’s complicated: Hybrid hummingbirds in Mexico
  274. Knock, Knock! Who is there? Woodpeckers, but how many species?
  275. Glacial cycles culminate in hybridization events between North American Stoat populations
  276. Why are seabird hybrids so rare?
  277. Probing the Puzzling Plumage Patterns of White Wagtails
  278. Glorious Bustards: How many species of great bustard are there?
  279. Mind the gaps: The incompleteness of complete avian genome assemblies
  280. The Flight of the Condor: How the Andes shapes patterns of gene flow
  281. Readers’ Hybrids: A lot of hybrid parrots!
  282. Let me take a selfie: Scientists discover hybridization in a selfing fish
  283. Several hybridization events shaped the evolution of Neotropical flycatchers (genus Elaenia)
  284. Coal tits exchange genes in central Europe
  285. On avian hybrids in the low countries
  286. Holy Cow! Hybridization Facilitated Domestication and Adaptation of Cows
  287. Exploring gene tree discordance with lizards
  288. Are hybrids between capuchino seedeaters fertile?
  289. Hybridizing hares: How the snowshoe hare got its brown coat
  290. How trees can drive fish speciation in the Amazon
  291. Genetic Analyses confirm Hybridization in a Threatened Tern Species
  292. Do land bridges facilitate gene flow between island populations?
  293. Coloring outside species boundaries: A ‘super’-cool example of adaptive introgression in butterflies
  294. Why Nightingales Don’t Mix: Interspecific Competition and Sterile Females
  295. What keeps bird species distinct in Amazonian hybrid zones?
  296. A Dutch mystery: Can you guess which duck species have hybridized?
  297. What Happens When Two Badger Species Meet in Russia?
  298. Dumb, dumber, hybrids? Chickadee hybrids show lower intelligence
  299. The hybrid genome of the Italian Sparrow: endless genetic variation?
  300. Reader’s Hybrids: A Canada Goose x Greylag Goose in the UK
  301. Don’t forget the hybrids! Antbird study shows that not taking into account hybridization leads to the wrong species tree
  302. Are Wagtail subspecies supported by genetic data?
  303. Sorry I’m late. Less hybrid Flycatchers due to climate-driven changes in timing of breeding?
  304. It’s not a tree, but a network! New insights into the evolution of baleen whales
  305. Two new hybrids for the checklist: an Australian Ibis and a South-American Brush Finch
  306. The subspecies of the White-collared Seedeater complex are not even closely related
  307. There used to be two Black Swan species on New-Zealand
  308. Hybridizing Flame-rumped Tanagers clearly show that mixing red with yellow gives you orange
  309. Mixing mammoths and blending bears: DNA from fossils reveals ancient hybridization
  310. Bergmann’s Rule in the Andes: The Case of the Line-cheeked Spinetail
  311. Wandering Wekas: The Genetic Structure of a Flightless New Zealand Bird
  312. Hybrid zones help to unravel the genetics of bird coloration
  313. Disentangling the Evolutionary History of Towhees in Mexico
  314. OMG (Owls, Migration and Genetics)! A Heteropatric Speciation Model for Northern Saw-whet Owls
  315. From the Rainforest to the Savannah: Ecological Speciation in the Little Greenbul?
  316. Hybridization as the Engine of Adaptive Radiation
  317. Hybrid Bird Species: A Big Bird on the Galapagos Islands and a Small Manakin in the Amazon Basin
  318. Trouble with the Tinkerbirds: Different subspecies sing the same song
  319. A Reunion of Three Color Morphs on Reunion
  320. Cheating in the Czech Republic: Ducks Putting Their Eggs in the Wrong Basket
  321. A Lesson in Cline Theory with Some Hybridizing Barn Swallows
  322. Different, but the same: How Amazonian rivers and African deserts drive bird speciation
  323. Avian hybridization in Asia: Venturing into the (relatively) unknown
  324. You Go, Girl! Females determine direction of gene flow in Tree Finches
  325. Hybridization in Birds: The Trilogy
  326. Watch Your Head: Why White Wagtails Won’t Mix
  327. Looking for Migration Genes in the Willow Warbler Genome
  328. Promiscuous Petrels: Genetic Study Reveals Gene Flow on a Global Scale
  329. Throwback Thursday: Six Years with a Brewster’s Warbler
  330. Becoming Black: The Origins of Melanic Monarcha Flycatchers
  331. Che Figata! New studies on the ecology and evolution of a hybrid species, the Italian Sparrow
  332. Splitting Buntings in the Sahara
  333. More Species Than Meets the Eye: A Genetic Look at the Red-eyed Vireo Complex
  334. Mottled Mallards on the Western Gulf Coast
  335. Hybridization in Primates (and yes, that includes you!)
  336. Arctic Sharks: A Story of Ice-olation and Hybridization
  337. Hybrid Owls: Californian Contacts and Mediterranean Migrants
  338. The Beak of the Bullfinch: Remains of an Extinct Bird Species Found on the Azores
  339. Two Crow Hybrid Zones for the Price of One!
  340. A Northern and a Southern Perspective on Hybrids between Golden-winged and Blue-winged Warbler
  341. The Ecological Succession Story of Hybridizing Bluebirds
  342. Hybrid Geese: A Trilogy of Papers
  343. Throwback Thursday: Observations of Red-shafted and Yellow-shafted Flickers in a 1893 letter to Science
  344. Throwback Thursday: Strange Swallows from 1902
  345. Some Hybrid Woodpeckers from North and South America
  346. Throwback Thursday: A Hybrid Quail That Tried to Phone Home
  347. The Superb Bird-of-Paradise and the ‘Dancing Species Concept’
  348. The Songs of Tree Finches (and their hybrids)
  349. Hybrid Geese in Finnish Hunting Bags
  350. Hybridizing Buntings in Iran
  351. Rawnsley’s Bowerdbird: Another species that turns out to be a hybrid
  352. Separating the wheat from the (chiff)chaff
  353. Interspecific Spooning
  354. It’s not a new species, it’s a hybrid!
  355. Conservation of the Mottled Duck: Multiple Populations and a Feral Threat
  356. A New Year and some new papers
  357. Spring Updates, including artistic Pheasants and Promiscuous Petrels
  358. An Early Christmas Present: Pictures and Papers
  359. Amazonian Hybrids
  360. Recent Updates: Flycatchers, Birds-of-Paradise, Eagles and Malagasy Passerines
  361. Morphology Insufficient to Detect Hybrid Sparrows
  362. Giant Petrel Hybrids are Fertile
  363. Thrush Migration and Speciation