Discover and read the best of Twitter Threads about #ornithology

Most recents (5)

Stoked to announce @ZooKeys_Journal published our @BatumiRaptors data paper! It explains how our #citizenscience project monitors the autumn #migration of >1.000.000 #raptors in the Eastern Black Sea Flyway, and how to use our #openaccess data @GBIF/@NLBIF! - 1/n

#ornithology
Many #raptors migrate primarily by thermal #soaring. To do so they travel by day and avoid high mtns and open sea. This leads to spectacular raptor aggregations in overland #flyways. One of the world´s largest raptor flyways occurs along the eastern Black Sea coast in SW Georgia.
The Eastern Black Sea Flyway has its narrowest point just north of #Batumi, where the coast and Lesser Caucasus form a clear "bottleneck". The mtns are not extremely high but present a significant barrier for #raptors on #migration due to low and dense cloud cover. @BatumiRaptors
Read 21 tweets
Hi everyone! Time for another #ORNITHOLODAY!

My name is Brandon Edwards (@bedwards144), and I'll be tweeting to you LIVE from Guelph, ON Canada today. I plan to focus on the role of computer science (I'll call it #CompSci today) in #ornithology.

First, a bit about me!
I'm currently a 4th year BSc student at the University of Guelph (@uofg) in Guelph, ON. I initially started out in the school's Bachelor of Computing: Computer Science program, and actually was in that program for about 3 years before I switched to Mathematics! #ornitholoday
Before university, I had taken a year off after high school. During that time, I picked up the hobby of photographing birds, mainly just ones at bird feeders. It wasn't until I photographed this Red-bellied Woodpecker that I fell in love with birds and #ornithology! #ornitholoday
Read 126 tweets
All my #PhD #fieldwork is done.

I’ve been looking into Icelandic Whimbrels annual cycle and spent the breeding season in Iceland since 2015. While writing up I often miss my study sites. Decided to make a short thread summarising my #fieldwork there #phdlife #shorebirds #waders
Survey the breeding sites

Whimbrels are site faithful and territorial. I start the season by checking the area to see who’s back.
Here two males fight where their territories touch (I think; 10 MAY) #PhD #fieldwork #ornithology #waders #shorebirds #phdlife
Finding nests

As most #waders, Whimbrels usually lay 4 eggs. There is some colour variation between and within clutches (10 JUN; #Eyjafjallajökull in the background) #PhD #fieldwork #ornithology #oology #phdlife #shorebirds
Read 8 tweets
What happens when species with similar phenotypes experience secondary contact? Introducing our @biorxivpreprint: Cryptic and extensive hybridization between ancient lineages of American crows. biorxiv.org/content/early/…
Most species and most hybrid zones have historically been described based on phenotypes, but speciation and hybridization can also occur with negligible phenotypic differentiation. biorxiv.org/content/early/…
American and Northwestern crows are longstanding taxonomic species with a continuous distribution on the Pacific coast of North America. They lack reliable traditional characters for identification. biorxiv.org/content/early/…
Read 18 tweets
1 #BOU18TC

Often, conservation competes with food production by promoting less intensive farming and/or unfarmed reserves

Given that food production is essential for human wellbeing, what’s the best way of reconciling this trade-off?

To share, or spare; that is the question
2 #BOU18TC

We compared land sharing and land sparing scenarios (+ intermediate ones) all of which, crucially, produce the *same amount of food* overall.

We also evaluated a ‘three compartment sparing’ scenario (far right) which combines elements of both sharing and sparing
3 #BOU18TC

We used density-yield curves to estimate the regional population size of breeding birds under each scenario.

We fitted these curves separately for breeding birds in 2 regions of southern England: The Fens & Salisbury Plain

#ornithology
Read 7 tweets

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