Love me some hawks

3 red-tailed hawk PB074118© Maria de Bruyn res

After focusing mostly on the genus accipiter hawks in my last blog (especially the Cooper’s), I’d like to share a few more photos of buteo hawks that are common where I live. Taken over the past 4 years or so, the photos will vary and show them in various seasons.

The buteos are larger birds than the accipiters and somehow seem a bit more relaxed to me than the feisty accipiters.

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The red-tailed hawks (Buteo jamaicensis, above) are beauties as adults with dark red tail feathers. I tend to see them most often when I am away from home, visiting fields and natural areas. Frequently, I spot them when they are hunting. Their diets are rich and varied since they see almost any small animal as a potential meal. That includes rodents, rabbits, reptiles, fish, amphibians, invertebrates and other birds.

2 red-tailed hawk P9199889 © Maria de Bruyn res (2)

 

Those dietary choices mean that I regularly see them being chased by other birds, especially in the spring when the other birds want to protect their nestlings from the predatory beaks of the red-tails. Crows especially can get very raucous and angry when red-tailed hawks are near their nests.

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The red-tailed hawk below was being chased away as s/he flew away with a squirrel.

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There are 14 recognized sub-species of red-tailed hawks, which vary in color and range. In the area where I live, we have many Eastern red-tailed hawks, but last year I spotted another type flying over farmland. I asked experts from a raptor identification group for some assistance in describing it.

4 red-tailed hawk PB243087© Maria de Bruyn ed

One expert remarked: “This is a juvenile by the monochromatic brown tones, spotted bellyband and lack of dark terminal band on the wings….As a juvenile there is more overlap in phenotype than in adults, and often we cannot identify them to subspecies level.” She went on: “…this bird could be either a slightly heavier marked Eastern (borealis) or a Northern (abieticola). To me it is not heavily enough marked to be a slam dunk abieticola and I would probably not assign a subspecies to it.”

5 red-tailed hawk PB243137© Maria de Bruyn ed sgd

I asked if that meant that a Northern red-tailed hawk could be found in North Carolina and not just the Eastern sub-species, so I could start watching for those distinctions. She responded: “only in winter and probably not overly often that far south, but certainly worth keeping a look out for them.” I haven’t seen this hawk again to my knowledge.

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One of my favorite portrait photos (below) is of a red-tailed hawk. Taken in 2015, the bird flew across a field to perch in a tree right next to the path on which I and four other people were walking. S/he had seen a hispid cotton rat crawl into the vegetation underneath the tree. My birding companions walked on but I stayed and after 20 minutes or so, the hawk suddenly dropped down and snagged the rat, which must have had a terrifying wait at the end of its life. The hawk was very handsome though.

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While the red-tailed hawks are impressive, I have a softer spot for the red-shouldered hawks (Buteo lineatus). Somehow they look less fierce and a bit sweeter to me.42 red-shouldered hawk P1280192© Maria de Bruyn res

I see them carrying out all kinds of behaviors. Sometimes, they are just flying overhead, showing off their red shoulders as they travel aloft.

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They often perch high in trees to survey their territory.

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Tree tops often serve as a place to cuddle up when it is cold.

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They seem to enjoy preening when high up on snags at all times of year.

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A snag can be a place to call out to mates.

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And a level branch is a good place to mate.

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Sitting very still, they scan the ground to spot prey, which they often capture by dropping straight down to kill it in a fast strike. Their diet is varied, including many types of rodents and mammals such as squirrels, mice, chipmunks, voles. They also attack birds up to the size of jays, grouse or pheasants.

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When I’ve seen them snag prey, it has usually been smaller prey such as frogs, lizards, snakes and other reptiles and amphibians. A pair of red-shouldered hawks living at an urban park in a nearby city must really enjoy the crayfish that are abundant in the wetlands.

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These hawks will perch on many handy lookout posts when surveying the ground for prey. This one sat on a feeder at the local public library, suddenly flew a short way to drop down into the leaves and brush under nearby trees and seemed to be wrestling with a rodent of some kind. S/he left without the prey, however.

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In my yard, a resident red-shouldered hawk not only sits on branches but occasionally on a nest box, to the dismay of nearby songbirds. One ate all the large green frogs in my pond.

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At a small public park in a neighboring town, I watched a red-shouldered scan the field below intently for quite some time. The raptor then surprised me by dropping swiftly down, snagging something small and flying up to another tree to eat.

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It wasn’t until I enlarged the photos I took that I saw the bird had gotten a large worm. (When I posted the photo on facebook, a witty commentator remarked that he was collecting bait to go fishing!)

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Occasionally, they may be injured. This young hawk was perched in an out-of-the-way spot in a park and when I posted these photos, a commentator remarked that the bird looked injured with a wing out of place. She suggested I contact a rehabilitator but the bird eventually flew away seeming to be ok.

 

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While I know these raptors can be just as fierce as the other hawks, I do tend to think of the red-shouldered hawks as having sweet faces. Having watched them tend to their young, I know they can be very devoted parents and I always enjoy seeing them!

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Final note: “I love me some hawks” is not a title I would have chosen some years ago, but I liked it for this blog as it indicates —to me —enjoyment of something. I decided to look up where the phrase came from and ended up with several explanations: 1) an ungrammatical expression that might be associated with African American vernacular or with the rural areas of the southern US states; 2) an annoying phrase usually used by the middle-class; 3) a slang way of saying ‘I really love’; 4) a novel grammatical structure indicating “I always like” something. Kinda like the middle voice in ancient Greek. Well….at least I learned something new today. 😊

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Next blog – no birds but interesting creatures nonetheless!

The porch as a place of peril

It’s been quite a while since my last blog; other things keep getting in the way of my writing! In any case, I’d promised you a tale of a close encounter with a hawk; here it finally is!

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Immature Cooper’s hawk

I really enjoy watching raptors and, fortunately, I see them regularly on my nature walks. While I can spend quite a while just watching them soar, build nests and care for their young, I admittedly don’t always enjoy seeing them eat.

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When songbirds eat insects, they dismantle and swallow them fairly quickly. When raptors dine, they rarely gulp down their food. Meals can last quite some time while they dismember their prey, as was the case for the barred owl above (Strix varia) who was eating a squirrel.

The hawks whom I see often include four species that frequent my neighborhood, including my yard — the red-shouldered hawk (Buteo lineatus), the red-tailed hawk (Buteo jamaicensis), the Cooper’s hawk (Accipiter cooperii) and the sharp-shinned hawk (Accipiter striatus).

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The Cooper’s and sharp-shinned hawks are the most frequent visitors. To inexperienced birders, they look very similar. Size is one clue to identity with a sharp-shinned hawk averaging 10-14 inches in length (jay- or dove-sized, 25-35 cm), and a Cooper’s hawk being about crow-sized, averaging 15-20 inches long (38-51 cm). The sharp-shinned hawks (seen above and below) don’t seem to visit as often as the Cooper’s hawks.

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In 2019, a hawk caught a squirrel in my yard. Until recently, I was convinced that she was a red-shouldered hawk, but I decided to ask for confirmation from a raptor ID group on Facebook.

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The experts informed me that she was an exceptionally large Cooper’s hawk. One commented: “Largest female Cooper’s are around 21 ounces; obese Eastern Gray Squirrels are around that but most we see are little more than half that. And even cargo helicopters strain to lift much more than their own weight. So unless I see rocket assists on a Sharp-shinned (maxing out at around 7 ounces) they can’t lift the full carcass of an adult EG Squirrel.”

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The female Cooper’s hawks are up to one-third larger in size than the males and she was a hefty individual. Nevertheless, she had her work cut out in subduing the squirrel.

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While she was trying to hold onto and kill the rodent, a pair of crows began harassing her, but she held her ground.

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Ultimately, she was able to put the squirrel out of its misery and she finally flew off with it to consume her meal elsewhere.

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This year, I’ve had a young Cooper’s hawk come by; she was born in 2021 and seemed to be searching for something to make her day.

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Above you see her eye covered by the nictitating membrane

My most surprising — and definitely hair-raising — encounter with a hawk occurred this past April. I was sitting in a porch chair in front of my living room window. As I looked down to record bird species for an online birding site, I heard a hard collision into the window right next to my head. A male brown-headed cowbird (Molothrus ater) fell into my lap.15 brown-headed cowbird PB137591© Maria de Bruyn res

He was completely stunned, and as I looked down, he slid off my lap. Then I looked up to see if he was being chased. That was indeed the case — a large Cooper’s hawk was coming right toward my face with his/her legs extended in front with widely-spread claws ready to grab prey. Of course, I had no time to take a photo, but the photo below of another Cooper’s hawk shows a bit what those claws are like. Their enlarged rear talons are about 0.67-0.85 in long (17-21.7 mm) in males and 0.78-1.05 in (19.8-26.7 mm) in female hawks. 

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My amazement at the proximity of the incoming raptor so stunned me that I waited a second or two before waving my arm and yelling to the bird to stop — s/he was only about 3 feet from me! The bird had been so focused on the prey, that my shout made the raptor try to “backpedal” in mid-air.

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The hawk tumbled a bit, righted herself (I assume the size indicated a female) and then she shot up over the porch and house. The cowbird died and I laid him in the front yard, thinking she or another predator might take him. The next day, the cowbird was untouched, so I buried him.

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The encounter occupied my thoughts for quite a long time afterwards. I felt incredibly lucky those claws had not reached my face or head with terrible results. It had not occurred to me that my front porch could be a place of potential avian-caused peril, but I learned a good lesson that day — always pay attention to your surroundings and stay alert when predators could be nearby!

Next blog: a few shots of some red-tailed and red-shouldered hawks that I’ve enjoyed taking over the past couple years.

 

Beautiful birds of prey – Costa Rica

During my two trips to Costa Rica in 2018 and 2019, it was a pleasure to see the varied birds of prey flying by and sitting near roads. Unfortunately, both years my photography was not at its best so a good number of the following shots aren’t that great, but they give you an idea of the beauties that can be seen there. My favorite was this gorgeous baby spectacled owl (Pulsatrix perspicillata) who was staring through the rain forest foliage at us from a distance last year. This photo was taken with my phone through a scope.

 

But first let me explain which types of birds constitute the birds of prey as there are some slightly differing definitions. One explanation focuses on birds that mostly hunt vertebrates that are large in relation to their own size. It doesn’t seem quite specific enough as sometimes a great blue heron will eat a relatively big mammal such as a gopher, while I’ve had red-shouldered hawks in my yard fishing the pond for frogs that are fairly small in relation to them. This photo of a double-toothed kite (Harpagus bidentatus) in Costa Rica carrying a small lizard shows that they will feed on smaller prey as well, however.

Another definition is more specific, focusing on physical traits of these birds: relatively large, hooked bills with which they can tear flesh, powerful feet with sharp talons for catching prey animals, keen binocular vision for detecting prey at a distance, and good hearing. This roadside hawk (Rupornis magnirostris), seen in 2018 in the first photo below and in 2019 in the other two photos, illustrates these features.

The raptors are further divided into two major groups: the diurnal species that hunt in the daytime (e.g., eagles, falcons, hawks, vultures) and the nocturnal species that are mainly active at night (the owls). We’ll start with the owls, of which I’ve seen four species now in Costa Rica. I already mentioned the lovely spectacled owl. The immature owl is fuzzy and white with huge eyes; the adults have dark heads and backs but retain their striking yellow eyes. I only saw the young owl, which we observed thanks to our local guide, Cope.

 

Cope is not only a guide but also an artist and I couldn’t resist buying a print of his lovely portrait of the young spectacled owl.

 

Our trip guide, Steve, had heard at one reserve that a pair of mottled owls (Ciccaba virgata) were perched in a tree near a trail. They were exactly where predicted and though the heavy, dark vegetation made for a difficult view, we could see the two resting comfortably. These medium-sized owls lack ear tufts.

Last August, Steve spotted a ferruginous pygmy owl (Glaucidium brasilianum) for us near a creek but it was fairly far off, partly obscured by leaves from where I stood. We had seen one closer up in 2018, perched in trees near the road. This owl is crepuscular (mostly active at dawn and dusk) but they also hunt during the day, which may help account for its willingness to be out in the afternoon so we could get a good look at it.

An owl that I did not see last August was the bare-shanked screech owl (Megascops clarkia). One had been spotted at the top of a hill, but it was raining that day, the path was very muddy and slippery and my arthritic knees and ankles were not cooperating in pathway navigation. The rest of my group ascended while I birded below. But my disappointment was not too great as I had had some good looks at one in 2018. Steve had played the owl’s call, not expecting the bird to appear but thinking it might flush another bird that would be investigating if the owl was near. In flew the lovely little screech owl, perching nicely in view amid the forest foliage!

                             

Some scientists now think that the owls may be more closely aligned with the birds of the nightjar group than with diurnal raptors. The nightjars have small feet and don’t walk much. These nocturnal birds, which have quite short bills, feed on insects found on the ground or caught while flying. We saw a member of this family, the common paraque (Nyctidromus albicollis), resting on a pathway one evening; this one was likely a female as the male has more white on its wings and tail. Their plumage is quite mottled so that they blend in well with their backgrounds; these two photos were taken with different amounts of light illuminating the bird.

Another type of nocturnal bird related to nightjars (but also not considered a raptor) is the potoo. In 2018, Steve found us a common potoo (Nyctibius griseus) perched atop a snag along a very dark, unlit country road. This past August, we saw one perched high above us in a tree during the daytime. When this insectivore perches on a snag during the day, it often blends in so well and remains so completely motionless, people often don’t see it because it looks like it is part of the stump or snag!

This past year we also got to see a great potoo (Nyctibius grandis) as well. They eat not only insects but also small vertebrates with their short-beaked but very broad mouths.

 

The diurnal birds of prey that I’ve seen in Costa Rica include a hawk that I’ve also seen in North Carolina – the broad-winged hawk (Buteo platypterus). Some of these have quite long migratory paths but there are also five sub-species that are endemic to the Caribbean region that don’t migrate.

 

There are both white hawks (Pseudastur albicollis, seen flying very high overhead) and common black hawks (Buteogallus anthracinus) in Costa Rica. The white hawks prey on insects, mammals and reptiles. The black hawks mainly eat crabs, supplemented with eggs and small vertebrates. The one we saw was quite vocal.

 

 

Two other species of beautiful hawks are the gray (Buteo plagiatus) and gray-lined hawks (Buteo nitidus). We saw the gray hawk in roadside trees last August; this is a common perch from which they swoop down on prey animals, including lizards, snakes, frogs, birds and small mammals.

   

In 2018, we were able to admire a beautiful gray-lined hawk (Buteo nitidus) sitting atop a snag. These raptors are seen mainly in southern Costa Rica; their hunting style and favored prey are similar to those of the gray hawks.

The swallow-tailed kite (Elanoides forficatus) seems to be a bird of prey that is seen throughout Costa Rica. Adults feed their young frogs, lizards, snakes and small birds, while they mostly eat insects while flying about themselves.

 

Our guide, Steve, spotted a bat falcon for us (Falco rufiularis) but it was so far away that we had to get a reasonable view mostly through a scope (left). Here is a much better view. We had much better luck watching a laughing falcon (Herpetotheres cachinnans), which was also one of my favorite raptors.

 

We had been driving down a mountain road when this gorgeous bird flew from a stand of trees to a snag in a field.

 

This handsome avian is a raptor with a specialized diet – they mainly eat snakes, giving rise to the erroneous common name of snake hawk. They supplement this dietary preference with lizards, rodents, bats and centipedes.

I didn’t hear this bird but they can vocalize for up to 5 minutes at a time.

 

The next two birds I saw only in flight and only in 2018. The caracaras are members of the falcon family but, interestingly, they are among the few raptors that hunt for food on foot. The crested caracara (Caracara cheriway) has a widely varied diet, including: rabbits, ground squirrels, skunks, birds, frogs, snakes, lizards, turtles, young alligators, fish and large insects. Also of interest is the fact that they not only hunt live prey but also eat carrion.

 

The yellow-headed caracara (Milvago chimachima) does not eat birds but also hunts reptiles, amphibians and small animals. In some places, it is called the tickbird as it will take ticks from cattle. It, too, will eat carrion.

 

 

And then the final bird in this line-up – a much better known carrion eater, the king vulture (Sarcoramphus papa). This mainly white-colored vulture tends to soar much higher than other vultures and often does so without flapping its wings. They are the second-largest vultures in the Western hemisphere (only the condors are larger).

 

A North Carolina-based blog is next and then back to Costa Rica for some more “exotic” animals.

Thanks to fellow travelers, Ylva Byars and Nan DeWire for photos that they provided!

Oh, those ravishing raptors!

Numerous people who attract birds with feeders feel regret and sadness when one of their avian visitors is captured to serve as a meal for a raptor in the neighborhood. I, too, feel that pity and discomfort when I see one of the hawks or owls capture a bird or animal because my thoughts go to the pain and fear that the prey must feel. But of course all wildlife has to eat and I want members of the predator species to survive as well. And the beautiful predators can be really interesting to observe.

 

A Cooper’s hawk (Accipiter cooperii, left) sometimes frequents my yard looking for a bird to take. This particular day in November last year, the hawk flew to the front-yard feeders but came up empty-taloned. Raptors, also known as birds of prey, are not the only birds that eat something other than seed. Some smaller birds, like the shrike, do so and many songbirds eat insects. The raptors, however, often go after prey that is fairly large in comparison to their own body size. In January this year, I came across another Cooper’s hawk at a nature reserve. The bird flew soundlessly past me to land in a tree downslope and paused for a bit before flying on, providing time for me to get a gorgeous portrait.

I’ve been lucky lately in seeing barred owls (Strix varia) at the Brumley Nature Preserve North. This owl was sitting silently next to a walking path, looking out over the adjacent field.

A couple weeks ago, I was startled by this barred owl who suddenly flew in front of me from behind my right shoulder. I hadn’t noticed him/her in a tree behind me. I tried to follow its flight but lost it. I thanked the owl for letting me glimpse it and said it would be nice if s/he came back so I could get another look. Sure enough, after I had turned back to the vicinity where I originally was surprised by the silent predator, it flew in and perched on a branch. The bird had a snooze, keeping one eye partially open to keep me in view.

  

Lately, I’ve been seeing many red-shouldered hawks (Buteo lineatus). They have been flying overhead at the nature reserves. The other day, two flew by calling raucously and then they alighted at the top of a far distant tree. I couldn’t get a photo but did see them mating in silhouette against the late afternoon sky.

  

 

A few weeks ago, a pair of red-shouldered hawks began constructing a nest just down the street from where I live. One afternoon, I happened to see them and one was collecting twigs to build or refurbish a nest.

 

 

   

This pair roams our neighborhood looking for prey; sometimes, one or both will perch in my back-yard tree for a little rest.

    

When one of the red-shouldered or Cooper’s hawks pauses for some time in the tree over the small pond, I figure it is watching for frogs or one of the chipmunks that live in the rocks surrounding the pond. The chipmunks appear to be very good at eluding capture.

 

 

A couple weeks ago, our neighborhood family of American crows (Corvus brachyrhynchos) was making a racket in my yard and when I looked out the window, I could see them harassing a hawk. I couldn’t make out why they were so angry but grabbed my camera for some shots through the window.

 

  

It turned out that the Cooper’s hawk had caught one of the numerous Eastern gray squirrels that live here. The squirrels sometimes annoy me but on the whole, I enjoy watching their antics, so I felt badly for this squirrel, who obviously was not going down without some struggle.

What made it easier for me to watch was that I didn’t really see the squirrel’s head and it was not making a sound. I think the hawk had silenced it early on when it had its claws around its neck and chest.

The hawk was determined and kept hold of the rodent, eventually subduing it.

The hawk as not unscathed, however, as you can see from the wound on its leg.

When the raptor flew off suddenly with the squirrel hanging from its talons, the three crows chased it in hot pursuit. I don’t know if they were just upset that the hawk was present or if they wanted to steal the squirrel away. On walks through the neighborhood, I am now regularly seeing the hawks in trees and on power lines. They are not too shy and seem to be adapted to the human presence in their territory.

  

While I may be feeling a bit wary for the other animals and birds when the stunning raptors appear, it still is a thrill to see one up close. Only about half of the red-shouldered chicks make it through their first year of life, so I hope the hawks keep coming by. And who knows, maybe we will have some of the long-lived birds who can reach an age of 15-19 years!

 

 

 

An avian buffet appears!

In the town where I live, there is a private lake in a neighborhood of single-family homes. The little body of water was created by developers who dammed a local creek; now a neighborhood association levies annual fees for use of the lake for swimming, fishing and boating. In the past month, the neighborhood residents were surprised by an influx of birds that they do not usually see and some photos of the new avian visitors began circulating.

Given my interest in wildlife and birds, some colleagues passed on a couple of photos to me and one couple kindly invited me to come visit so that I could see the new arrivals in person. They were especially curious about the identity of a few ducks. When I arrived, no ducks were in sight, but at least 80 double-crested cormorants (Phalacrocorax auratus) were hanging out in crowds on two floating docks.

Their tightly-packed presence had displaced the Canada geese (Branta canadensis), who are more common lake residents. A group of 11 geese were off in the distance on shore leaving the open water to the visiting avian groups.

Some of the cormorants couldn’t fit onto the platforms, so they swam around in the company of the many dozens of ring-billed gulls (Larus delawarensis) of all ages who were swarming the waters as well.

From time to time, the gulls would begin edging their way onto the platforms, eventually taking up space vacated by the cormorants. There are both adult and immature gulls in the crowd.

From time to time, the gulls launch themselves into the air for aerial forays which end in dives down to pick up a fish, of which there still seem to be plenty. This is because the shad population with which the lake was apparently stocked is dying off as a whole.

Why is this happening? I don’t know the species of shad with which the lake was stocked, but it appears that threadfin shad (Dorosoma petenense) are common in the Southeastern USA and often introduced as forage fish for the bass and catfish that fisher-people seek. The shad are very sensitive to changes in water temperature; when it goes below about 42° F (5.5° C), they expire. In the past 6 weeks, we had an unusual early winter storm with about 8-11 inches of snow, followed by days and days of cold rains. Sometimes, it is cold 24 hours long; other days have nights and dawns below freezing and then afternoon temperatures of 50-60° F (10-17° C). The shad die-off is a result.

  

The newly arrived birds are obviously enjoying the easy pickings. When the gulls drop down to snatch a fish, they are almost always pursued by other gulls who try to make them drop the prize.

 

Even when they alight with a fish firmly held in their beaks, other gulls harass them in an attempt to make them give up the meal.

 

  

The shad often appear to be too large for the gulls to swallow. I saw several gulls try to position them to get them down their gullets but the fish just wouldn’t go down. So they drop the fish in the water and then try to pick off pieces for easier eating, while fending off neighboring gulls.

  

It is unclear to me how the birds who don’t usually populate the lake in winter knew that a spontaneous buffet had appeared. In addition to the cormorants and gulls, a group of seven bald eagles (Haliaeetus leucocephalus) was also fishing when I visited. There were some almost full adult eagles (with mostly white heads and tails) and several immature birds of varying ages (eagles reach maturity at 5 years of age). I guess that they came over from Jordan Lake, which is quite a fair distance away. Searching the Internet has not yet given me an answer to this question.

I didn’t see the eagles harass gulls who had gotten a fish but they were very carefully watching one another. When the eagle below managed to get a snack, other immature eagles closely followed him/her. A sub-adult who got a fish was harassed by an immature bird as well.

 

The eagles soared overhead and were joined at one point by a beautiful red-tailed hawk (Buteo jamaicensis). The larger raptors let the hawk fly alongside them with no problem.

It was quite a chilly morning when I got to see the visiting aquatic birds, so I only stayed a short time. But my friends invited me to return for another visit, which I hope to do soon as there is no telling how long it will take the visiting birds to eat the easily available shad. And the ducks? I was able to get one rather indistinct photo of a threesome across the lake and helpful folks in a Facebook group confirmed my guess – they are ruddy ducks (Oxyura jamaicensis). Maybe I can get a decent photo of them next time. 🙂