Friday, July 31, 2015

And they are off!

Clickers - Catherine Hamilton

It's started! Southbound migration. Here in Los Angeles those tiny terrors: Rufous Hummingbirds are back and bullying all and sundry at the feeders as they make their way south for the winter. Down along the LA River and out in the desert beyond the San Gabriel Mountains, shorebirds, terns and swallows are starting to pile up at the usual watery oases. Though just a trickle of landbirds so far, we aren't so far removed from the migrant flood.

Though most 'Fall' watches won't start up for a couple of weeks yet it was exciting to see the first flight of raptors reported on Hawkcount from Congaree Bluffs, SC (report here). It always seems weird to me to talk about Fall migration when most of my non-birding friends are still in the middle of their beach season. Of course in reality some birds are on the move most of the year and it always amuses me to think that while many hawkwatch sites are tallying southbound migration, up at the Braddock Bay Hawkwatch in NY (home of the HMANA Raptor ID Workshop) they are counting the northbound push of post breeding dispersal along the Great Lakes (read about the phenomenon here).

Red-tailed Hawk - Luke Tiller

Reading that report from South Carolina I find myself imagining the excitement of seeing those initial couple of migrant raptors breaking over the horizon, as well as enjoying the other soaring birds like Wood Storks and Anhingas as they float by. I wonder if I am the only one out there that gets a vicarious thrill from looking at the day's reports in Hawkcount and reading through the highs and lows of other peoples days out hawkwatching? Being in the Los Angeles Basin means that there is little in the way of any visual migration of raptors, or anything else for that matter, so being able to scan through the reports in the evening is about as close as I get.

I start with sites that I know well: either ones I have counted at or that I have visited. That way you know what you've missed by being miles away, or maybe just stuck in the office all day. As well as keeping up with known sites I also just enjoy looking through and reading the reports, appreciating the descriptions of the flights, the humor of the counters or even just sympathizing with the frustrations of a seasons developments. The real highlight for me though is to look at those sites with mind-boggling flights in Texas, Mexico and Panama and try to imagine the panic, joy and insanity a day with two million raptors might cause (Hawkcount report for Cerro Ancon, Panama here).

Braddock Bay Hawkwatchers - Luke Tiller

Am I alone in this? Or are there other online hawkwatchers enjoying the seasons flight from the comfort of their own office? Of course I have to say that being there for the flights would be better, but when you can't, at least for me, there is always Hawkcount! Maybe I should start a hawkwatchers anonymous for those of us deprived of the real thing by location, work or whatever else in life is getting in the way?


Monday, July 27, 2015

Report from Kittatinny Roundtable

Laurie Goodrich hosting the Kittatinny Roundtable at Hawk Mountain Sanctuary
The annual Kittatinny Roundtable for hawkwatch coordinators is always great fun, and this year was no exception. Hosted by Hawk Mountain Sanctuary for nearly 40 years now, the summertime event is a chance for hawk site coordinators in southern Pennsylvania, upper Maryland and New Jersey to get together in the off season to discuss raptor migrations from the previous year.

The event includes a roundup of the previous year’s migration results and timing, as well as several presentations from researchers about their current work.  This year we heard from Jean-Francois (J.F.) Therrien about Project Snowstorm and some of the conditions that led to the big irruption of snowy owls last winter.  Nick Bolgiano reported on his study of the geographic changes in the distribution of the American Kestrel. The kestrel is declining in much of the northeast, but is stable in the Midwest and, at least for the moment, in Pennsylvania. He also found a direct correlation between cold and snowy winters and lower kestrel populations the following year.  Holly Merker described the advantages of using a group or hawkwatch site account to enter sightings through HawkCount and eBird.  Jack’s Mountain reported on a record-breaking Golden Eagle flight in three hours on October 31. They tallied the first eagle at 12:55, saw several kettles of 5-7 eagles during the afternoon and ended the day with 56 Golden Eagles, which smashed the old record of 31.

The meeting’s organizer Laurie Goodrich reported on Hawk Mountain’s Broad-winged Hawk migration tracking. The Broad-winged Hawk tracking project just completed its first year but already has produced some new information.  Four broadwings were fitted with radio transmitters, an adult female and three fledglings.  The fledglings made it down into Mexico and central America but apparently did not survive to travel further.  The female bird, dubbed Abbo, made it into Brazil for the winter, where she was already starting to float around in a constantly northerly direction by mid-January.  Her flight paths to the south and returning to Pennsylvania this spring were nearly identical. This year four more female birds are or will be trapped to see where they go and when.  Female birds are used as they are larger, and the tracking devices are still too large for the smaller male birds.

Most of the sites attending this session had poor Broad-winged Hawk flights in 2014, though Scott’s Mountain in New Jersey could boast 11,208 for the season.  Kestrel flights were both up and down but probably averaged out to be about the same overall. Golden Eagle flights were strong, with Waggoner’s Gap the leader at 241.  Overall, that flight had two big days at most sites on October 26 and November 2.

Laurie believes the Kittatinny Roundtable is the only regional get-together of its kind.  It would be nice to see similar events in other regions, especially around the Great Lakes and the far northeast.

Monday, July 13, 2015

2015 AOU Check-list Supplement

Roadside Hawk - Catherine Hamilton
The American Ornithological Union recently released its 2015 Check-list Supplement (available here). There are a few changes that will be of interest to raptor aficionados and hawkwatchers in this year’s supplement. Coincidentally most of them seem to affect raptors that we hope to see on our Raptors of the Rio Grande Valley Tour in November (link here). 

One change is a new genus and sequence for both White-tailed and Roadside Hawk. White-tailed Hawk makes a change from Buteo albicaudatus to Geranoaetus albicaudatus based on genetic data. This means that White-tailed Hawk moves into a genus with Variable Hawk and Black-chested Buzzard-Eagle and becomes the only North American Geranoaetus. White-tailed Hawk is mainly restricted to coastal southern Texas in the USA and can be found southwards all the way to Argentina.

White-tailed Hawk - Catherine Hamilton
Roadside Hawk also comes out of Buteo into its own genus Rupornis. This species has a number of subspecies, some of which may well deserve species status, and can be found from Mexico south to tropical South America. Though considered a mainly resident species there are eight winter records of the species from the Rio Grande Valley, TX (so we will keep our fingers crossed).

New Buteonine Hawk Sequence: Roadside Hawk, Harris’s Hawk, White-tailed Hawk, Gray Hawk, Red-shouldered Hawk, Broad-winged Hawk, Hawaiian Hawk, Short-tailed Hawk, Zone-tailed Hawk, Red-tailed Hawk, Rough-legged Hawk, Ferruginous Hawk 

One of the other species we will see in Texas is involved in a small change as Crested Caracara comes out of its subfamily Caracarinae and moves into the family of true falcons: Falconinae.

Northern Harrier -  Rick Bacher
One of the proposed changes that was not accepted but might be of interest to raptor fans, hawkwatchers and maybe more specifically raptor banders was the proposal to split Northern Harrier (Circus hudsonius) from Hen Harrier (Circus cyaneus). There is currently one accepted record of the European subspecies from a wing found on the Aleutians in 1999, though Howell in his comments in Rare Birds of North America (Princeton University Press 2014) suggests that there are other promising reports out there including one from New Jersey in 2010. The book also has a good overview on separating the two subspecies: relatively easy with adult male Hen Harriers which are much cleaner grey and white and with six black primaries, much less so with females and juveniles. Juvenile Hen Harrier averages streakier than Northern and much less cinnamon/orange overall. You can read a good perspective on the ID challenge from Julian Hough on Birding Frontiers (details here) and read an account of the Cape May bird (link here). Getting extensive photos of interesting birds would be highly recommended!

Tuesday, July 7, 2015

Progress on HMANA's new home

by Will Weber


HMANA will find a permanent home in the Visitor Center of the Detroit River International Wildlife Refuge in southeast Michigan. Now under construction, the visitor center is expected to be completed in the spring of 2017.

The Detroit River International Wildlife Refuge includes 48 miles of shoreline along the lower Detroit River and western Lake Erie. Nearly seven million people live within a 45-minute drive. The watershed supports a great diversity of wildlife and habitats which provide many world-class outdoor recreational opportunities. The count site of the Detroit River Hawk Watch is included in the refuge area and Holiday Beach Migration Observatory is within sight of the refuge.

For 44 years, beginning in 1946, automobile component manufacturing occurred on the gateway to North America’s only international wildlife refuge, a 44-acre tract of waterfront property in Trenton, Michigan. By 1990, automotive facilities were closed and the land had been remediated to industry standards, leaving an industrial brownfield behind to sit vacant for the next 12 years. In 2002, Wayne County purchased the land to become the gateway to the Detroit River International Wildlife Refuge. The property is now known as the Refuge Gateway. A master plan for the site, including a large visitor center, was then developed by Wayne County, the U.S. Fish and Wildlife Service, and many partners to serve as a blueprint for the cleanup and restoration work at the Refuge Gateway necessary to establish the site as an ecological buffer for Humbug Marsh, Michigan’s only “Wetland of International Importance.”

Since the adoption of the Refuge Gateway Master Plan in 2006, much work has been accomplished, including: capping of brownfield lands, daylighting Monguagon Creek and constructing a retention pond and emergent wetland to treat storm water prior to discharge to the Detroit River, a shoreline and riparian restoration, completion of all public access roads, and construction of two wildlife observation decks and an education shelter in Humbug Marsh. In 2011, the Refuge Gateway received $1.39 million in funding to complete all cleanup and restoration work in 2012. This “Extreme Makeover” of the Refuge Gateway landscape will restore over 41 acres of land for wildlife habitat and outdoor education and recreational experiences. At this time, HMANA is the only non-profit environmental organization invited to find a home in the visitor center. In part, this is a recognition of the importance of the annual raptor  passage over the refuge as an opportunity for public environmental education.

Monday, April 20, 2015

HMANA Raptor ID Workshop 2015 report

HMANA Workshop at Braddock Bay
HMANA’s raptor ID workshop is held in early April for a few very good reasons: Spring migration is much more compact than Fall which means seeing a good variety of different species over a week is much more likely than in say September. Early April specifically also gives you a great chance of seeing both adult and juvenile birds of many species and the end date of the tour also means that we have a great chance of running into the first Broad-winged Hawks of the season.

With all that taken into consideration the weather in Western New York in early April is, shall we say, temperamental at best. It helps that workshop leaders Frank Nicoletti and I both have a number of seasons experience counting at Braddock and have a pretty good feel for where might be good on what days depending on the forecast. Monday the 6th of April wasn’t promising much at Braddock or Derby Hill but the weather forecast to our west looked enticing enough that even with a late start to the day (to allow for arrivals from Vermont and sleep ins from California) we decided to roll the dice and head the hour and a half west for a ‘lifer’ hawkwatch for all concerned: Hamburg.  

Just south of Buffalo we arrived to find the Hamburg watch tallying a nice little flight of Red-shouldered Hawks, including a good number of adults. We also got treated to a few Ospreys, some Red-tailed Hawks (including a good number of heavily marked birds) and got to compare a few accipiters. The volunteer crew there made us feel very welcome and it was great to run into old friends (Alec Humann and Rick Bacher)  and make some new ones (counter Mike Zebehazy). They ended their day with almost 1500 birds, a nice count by anyone’s standards. We also ran into a couple of nice species for the trip including both Vesper and Field Sparrows and a beautiful wintering Red-headed Woodpecker. The days flight details (here). 

Osprey - Luke Tiller
The next two days (Tuesday 7th and Wednesday 8th) weren’t looking too promising for much in the way of raptor flight, but we kept our spirits up by exploring some of the other birding opportunities the region has to offer. We had soon swept up a nice array of waterfowl including a rare Tufted Duck in Ithaca and explored the myriad of open country habitats that make Montezuma NWR such a jewel of the New York birding scene. Montezuma is also the site where much of the reintroduction of Bald Eagles to the state was done and is still a popular nesting area for these birds. As well as some nice views and photo ops of the Bald Eagles we managed to dig up a few interesting gulls: Glaucous, Lesser Black-backed and Kumlien’s/Iceland and some cool waterfowl like Trumpeter Swans and Snow Geese.

The promise of a decent southeast winds and perhaps a flight Thursday saw us up at 5:30am and winging our way two hours east from our base in Rochester to Mexico, New York and the Derby Hill Hawkwatch. As we started to pull up to the site Frank and I already had a good feeling, the winds were right and clouds of blackbirds and American Robins were winging their way over the site. This is what it’s all about as far as I am concerned - the majesty and magic of migration. In the mix were Snow Buntings, Yellow-bellied Sapsuckers, Common Redpolls and Rusty Blackbirds aplenty and after a couple of hours the raptors began to pick up. 

The great thing about good flights at Derby is that when the winds are right the birds are almost directly over your head. This makes for a great learning experience. Derby is also kind enough to provide you with a set of numbered posts to help you describe where on the horizon a bird may be found (something for more watches to consider surely?).

Raptor highlights of the day included killer views of multiple Rough-legged Hawks and one very accommodating Golden Eagle that came right past us. We owed a big thanks to the whole Derby Hill crew for such a warm welcome, they really went all out to accommodate the needs of the group! Details of the days flight (here).

Rough-legged Hawk - Luke Tiller
Friday saw us with something of a conundrum, initially forecasts had shown potential for another good day at Derby and a day at Braddock that could be great or dismal depending on how long the rain held off. A late change to the forecast that showed potential for rain at Derby had us second guessing the two hour drive out there and back and instead focussing our energies back on Braddock Bay. 

We pulled up in the morning at Braddock Bay’s renowned West Spit to be greeted by both a light adult male Rough-legged Hawk and a Alfred Hitchcockesque flight of more blackbirds and robins. We knew we’d made a good call. Again there was a mix of goodies in the passerine flight including an impressive number of Northern Flickers, a Wilson’s Snipe and a few Purple Finches. The excitement was rapidly building but so were the clouds and after an hour or so of mainly passerine flight the skies opened and torrents of rain poured down - the perfect time to go replenish our caffeine at Tim Hortons. As skies lightened again we headed back to West Spit and the flight started up again with a bang as a juvenile Northern Goshawk bustled across the tree line in front of us giving great views.

The winds on the day really started to pick up in the late morning and we found ourselves moving in order to stay in touch with a flight that was pushing inland - not through wind direction but from the birds desire to stay away from the potential danger of the water. From our new sheltered spot we managed to pick up the two incredible highlights of the day: two adult dark Swanson’s Hawks! This was a repeat of last year’s amazing sightings but instead of being spread over two days, this took place on one.

The push of raptors was both exciting and educational - allowing great comparisons between species - even such unexpected ones as Rough-legged and Swainson’s Hawk. The raptors eventually petered out late in the day, but that just gave us the chance to stop in at Owl Woods to find a cute little Northern Saw-whet Owl. An incredible day - even more so given the early week forecast! Flight details (here). 

Northern Saw-whet Owl - Luke Tiller
The next two days saw the group back at Braddock Bay. Saturday carried the responsibility of heading up the Braddock Bay/HMANA Raptorthon event (details here).  Over the day the group and leaders tallied a highly respectable 14 species of raptors (including the tour’s only Peregrine Falcon and the season’s first Broad-winged Hawks) and 75 species of birds in total including both Long-eared Owl and a flyby Glaucous Gull! The final evening together as a group was spent sharing stories of the week and a few good local beers at the Old Toad Pub.

Sunday morning saw us again pick up a small but nicely mixed flight of passerines and raptors before long journeys home dragged participants reluctantly to the airport or to their awaiting cars. After a less than auspicious weather forecast at the beginning of the week it had turned into a great week with incredible and memorable passerine and raptor flights enjoyed, great learning experiences shared, and new friendships made. Over the week the group had tallied flights with almost 10,000 raptors of 16 different species and 124 species of birds overall including the Tufted Duck which was a life or North American bird for almost all concerned. I can’t wait to do it all again next year. Watch the HMANA website for upcoming details (events page here).

Thursday, March 19, 2015

Hawk Watchers Contribute Valuable Data to Another Successful Year of Dragonfly Migration Monitoring

Participating hawk watch sites in 2013 and 2014.
In 2013, HMANA partnered with the Migratory Dragonfly Partnership (MDP), a group dedicated to the long-term study of dragonfly migration in North America, to for­mally incorporate daily dragonfly observations and counts into the fall monitoring protocols of participating hawk watch sites. 

HMANA partnered with MDP again in 2014 to continue monitoring efforts and help increase our un­derstanding of dragonfly migration. After just two years, some interesting trends are coming to light. Thank you to the Xerces Society for analyzing the data and summarizing the findings. You can read the full 2013 and 2014 reports online at http://www.hmana.org/migratory-dragonfly-partnership/.

By the end of the 2014 migration season, over 1,300 individual species records had been collected from 40 hawk watch monitors at 19 participating observatories. 

Number of dragonflies counted flying past 19 hawk watch sites 
in eastern North America in 2013 and 2014.
Fall migration in eastern North America begins near the end of August and can con­tinue into October, although numbers are usu­ally highest in September while migration on the west coast begins about two weeks later. Within that span, some days see enormous spikes in the number of passing dragonflies while others have no activity at all. Migration intensity may vary from year to year; two pulses in 2014 occurred early in Sep­tember, but peak numbers were seen later in 2013.

In 2014, Lighthouse Point in CT experienced the highest one-day migration pulse of almost 6,000 dragonflies on 7 September, and Hawk Ridge, MN and Illinois Beach, IL both witnessed peak dragonfly numbers (>6000) on 2 September. The two Midwestern strongholds of Hawk Ridge and Illinois Beach were also champi­ons in overall reporting, with 151 and 95 observations submitted, re­spectively. Because dragonflies skirt coastlines, preferring not to fly out over open water, raptor monitors at these Great Lakes sites are ide­ally placed to witness large groups of migrants funneling past observa­tion sites.

Attention Spring Sites!
Based on the success of this partnership, HMANA is excited to continue participating in the MDP in 2015.We are looking to broaden efforts at hawk watch sites, not only throughout
western reaches of North America, but also gathering information about northward
spring migration for dragonflies. How much you or your spring site would like to be involved is completely up to you.

If you’re interested in participating, please contact Julie Brown (brown@hmana.org) for more details.  For more information, monitoring guidelines and protocol, please  visit http://www.hmana.org/migratory-dragonfly-partnership/.

And thank you to all participating hawk watch sites and individuals for making the Migration Dragonfly Partnership such a success!







Friday, October 24, 2014

HMANA Tour: Exploring Florida Keys and Dry Tortugas

By Will Weber, HMANA board member and tour participant
Hawk watching at the Florida Keys Hawk Watch
The HMANA Florida Keys/Dry Tortugas tour, Oct 6-12, 2014, was a great success.  Six participants enjoyed the extraordinary leadership and bird finding ability of leaders Rafael Galvez and Phil Brown.  Our regular program of dawn to dusk birding was punctuated with great meals in carefully chosen restaurants and our accommodations afforded good access to on- or near-site birding.

Yellow-throated Vireo
Banding demo at the Cape Florida Banding Station
I was very impressed with the Florida Keys Hawk Watch site at Curry Hammock State Park on Little Crawl Key.  They have a regular crew of four hawk watchers who diligently track raptors and non-raptors following multiple migration paths.  Our guide, Rafael, is the coordinator at this site. The site was very welcoming of our group and others who were visiting. As remote as the site is from population centers, there seems to be a regular stream of visitors and educational groups. While the site does not include a raptor banding operation, they do regular non-raptor monitoring patrols and keep in close contact with the Florida Keys Bird Banding site at Bill Baggs Cape Florida State Park on Key Biscayne. I was impressed by the gratitude the watch site personnel expressed for Hawkcount.org and HMANA’s support.  This site is geographically distant from any other count sites and seems critically important for monitoring raptors departing the continental US.

Some of these migrants continue past Key West and out over the open ocean via Garden Key and Fort Jefferson in the Dry Tortugas. Our day visit to Fort Jefferson and Dry Tortugas National Park was a spectacular raptor watching experience. While most birders plan a Dry Tortugas visit for the Spring migration, our October visit was superb for hawks, particularly all three species of falcons.  The warblers that had made the overnight flight from the Keys faced an incredible gauntlet of falcons and accipiters as they foraged in the meager vegetation of Garden Key. It was hard to know how many Peregrines, Merlins, Kestrels and Coopers Hawks we were observing chasing the passerines because they were possibly only pausing briefly en route to Cuba. Ospreys were abundant. We saw several Broad-wings that had made the crossing.

Scanning at Dry Tortugas National Park
The trip was planned and timed to feature the Peregrine migration in southern Florida. Every day of the trip we saw Peregrines in a variety of habitats.  For us northerners, a Mississippi Kite and numerous Short-tailed Hawks provided special encounters. While raptors were the prime focus, the participants enjoyed seeking and identifying not only all the birds, (140 species counted in total) but butterflies, dragonflies and plants.  Phil impressed me with his keen senses and knowledge of birds and Rafael seemed to have a comprehensive knowledge of Florida ecology, including botany.