Thursday, November 9, 2017

Governors Island 2017 - Part 7

I saved my favorite for the final 2017 Governors Island wildlife post: hawks!  While East Village red-tails Christo and Dora were busy raising a family in Tompkins Square this last summer, a couple of other hawks were working hard to maintain a territory on Governors Island.

I don't know if this is an official red-tailed hawk pair, but there were two individuals on the island all summer.  One was an adult and the other began the season as an immature.  Here it is on May 4 - note the barred tail and the light eye color. 

Immature red-tailed hawk

Governors Island has a few wide open spaces surrounded by tall trees, which is a nice environment for a hawk.

Light-eyed red-tailed hawk

The island paradise comes with a downside: competition. Several fish crows and a lot of gulls nested on the island over the summer, and none of them were happy to have hawks around.  I've posted this photo before, but I like it because it shows three different species (fish crow, red-tail and herring gull) in the same shot.  The red-tails were regularly mobbed by the other birds.

Crow, red-tailed hawk and gull

As is seen here with a fish crow chasing the immature hawk across the Parade Ground around Fort Jay. At the time, there was a crow nest near the fort.

 Fish crow chases red-tailed hawk

As summer wore on, the young hawk molted...

Red-tailed hawk

...and grew in an adult red tail.

Red-tailed hawk

I've been so spoiled watching our Tompkins Square hawks so easily, it was much more challenging to keep tabs on the Governors Island hawks.  I couldn't figure out what they were eating until I saw the young light-eyed hawk catch an immature starling.

Red-tail with starling

Pigeons are kind of rare on Governors Island, but starlings and mourning doves were in abundance.  I only saw one rat the whole summer, but people who work on the island tell me rats are present.  The hawks were also observed catching squirrels.

Red-tail

The young light-eyed hawk was the one I saw the most often, although both hawks were seen perched together several times.  To compare the two, the light-eyed hawk is below.  Note the golden head color, light belly band and small amounts of brown in the wings.

Light-eyed red-tail

This is the other, dark-eyed hawk.  Note the dark head, bright white chest and more brown in the wings.  This one also has a really interesting voice - its call is so hoarse, it sounds like someone who's had too many cigarettes and bourbon.  Unfortunately, I was never able to get a recording of this unique voice. 

Dark-eyed red-tail

The hawks were often pestered by kestrels.  Below, the light-eyed hawk takes refuge on a ledge as the shadow of a kestrel looms.

Red-tailed hawk and shadow of a kestrel

This was a typical scene - a hawk perched with a kestrel zipping around.

Kestrel and red-tail

Below, a mockingbird chases the dark-eyed hawk.

Mockingbird chasing red-tail

Cooper's hawks were present on the island, and I loved to watch them chase murmurations of starlings.  The open sky of Governors Island is great for observing this behavior.  When ever a flock of starlings took to the sky, there was a good chance a hawk might be in the mix.

Below, a Cooper's goes after a flock.  The hawk would shepherd the starlings into a tight group, then force them down and take one out.

Cooper's hawk chasing starlings

When the Cooper's got the starlings riled up, the red-tails would often take advantage. Below, the dark-eyed red-tail joins the same flock of starlings after the Cooper's took its prey.

Red-tailed hawk with starlings

Red-tailed hawk with starlings

I'm hoping this pair of red-tails remains on the island and decides to nest there.  We will have to wait until next season to find out.

This is not a hawk, but still worth noting - an osprey with a fish.  I'm not sure where it caught the fish, but I took this photo on the south side of the island near Picnic Point on October 18.  The osprey was flying from Buttermilk Channel and was headed west. I never saw it land, so I don't know where it enjoyed its lunch.

Osprey with fish

The island was open through the end of October this year, so I made sure to be there on the last day, which was Halloween.  As the sun set and the moon rose, I caught my last glimpse of the dark-eyed red-tail as it sailed over the Parade Ground.

Red-tail and moon

And, while reluctantly heading for the last ferry back to Manhattan, I was lucky to catch this last shot of a Cooper's hawk chasing a pigeon across the ferry landing.  It was a great way to end the season.

Cooper's hawk chasing a pigeon at sunset

To see more photos of the hawks on Governors Island, see my Flickr page.

I've also been keeping a running photographic record of Governors Island here. This is an ongoing project.

For information about all the birds documented on Governors Island, check out the collection of data on eBird, which is a citizen science project run by Cornell University. It's a wonderful resource and is proving to be a valuable tool for learning about bird migration and populations.

This illustrated eBird list contains photos of many of the birds observed on the island.

For anyone interested in visiting Governors Island, it is currently closed for the winter, but will be open to the public again on May 1. You can learn more about the island on its website.









Tuesday, November 7, 2017

Governors Island 2017 - Part 6

One reason I like to visit Governors Island is it is a great place to see wildlife in a more "natural" environment within an urban area.

Kestrels live in the city, often nesting in the cornices of tenement buildings.  When I've seen them hunt for food, they usually get sparrows or raid other bird nests. Governors Island provides an opportunity to see them behave more as they would in the wild, hunting large insects in an open grassy area.

This female kestrel is one of two who spent several weeks on the island. She has a notably white chest with well-defined brown streaks.

Kestrel

Kestrel

I watched her one afternoon as she hunted for prey at Hammock Grove, a hill in the middle of the island with a lot of low and dense vegitation.  She would perch on a tree (as above) or a pole (see below) and dive into the bushes and grab grasshoppers, cicadas and praying mantises.   

Kestrel

Fort Jay is a unique feature on the north side of the island.  It's surrounded by a moat that is filled with grass rather than water.  The grassy moat is a fantastic place to see kestrels and other birds hunt insects.  The predators perch on the walls of the fort and dive down into the moat and scoop up food.  In addition to kestrels, I watched flickers, phoebes, palm warblers, yellow-rumped warblers, cedar waxwings, mockingbirds, starlings, mourning doves, and even hawks hunt in the moat.

Below is the second female kestrel who spent a great deal of time on the island.  Compared to the kestrel above, this one has a more mottled buffy brown chest.  She's carrying a sparrow. 

Kestrel with sparrow

The two female kestrels dominated the area around the fort and I often saw them together, although I don't know the nature of their relationship.

Female kestrel

In October, a beautiful male spent some time on the island and he put on a fabulous show of hunting insects on the slope of Discovery Hill on the south side of the island.

Male kestrel

Like the previous female, the male would perch on a post and dive into the vegetation to catch large insects.  Below, he clutches a praying mantis.

Male kestrel with mantis

Below, the same male goes after a cricket on the pavement along the water's edge.

Kestrel goes for a cricket

He gets the cricket in his talon...

Kestrel goes for a cricket

...then poses for the camera with his trophy.

Kestrel with a cricket

This is the same male with Jersey City in the background.

Male kestrel

Kestrels were not the only falcons present on the island this last season.  One afternoon, I was lucky enough to come across a merlin who was just chilling out on a wood pile.

Merlin

I had just been watching a male kestrel harass a red-tailed hawk atop a building in the middle of the island about ten minutes before.  To my surprise, the same kestrel appeared as I was watching the merlin.

Merlin and kestrel

As if that wasn't exciting enough, the two falcons then did an astonishing thing - they quietly hung out together!  In the photo below, the kestrel is perched on the branch and the merlin is down to the left on the ground.  They stayed in this position for several minutes before the kestrel flew down to the ground to join the merlin and they both disappeared behind the pile of debris.

Merlin and kestrel hanging out together

What were they up to?  Neither the kestrel nor the merlin ever made a sound, they just calmly walked off together.  I couldn't get a better view as I was trapped behind a fence, so what these two got up to behind the debris pile remains a mystery.

I took some video that shows the both of them together. I was originally filming the merlin and, just as I panned out with the camera, the kestrel flew in and perched on the wood pile, so I tried to quickly zoom back in.  At the 1:47 mark, you can see the kestrel perched on a branch to the right.



About a month later, another merlin appeared, just standing in the middle of a patch of tilled dirt on the south side of Fort Jay.

Merlin

This particular patch of dirt proved to be an extremely active area for birds.  On this day, along with the merlin, sixteen flickers, four hermit thrushes, several palm warblers and the two female kestrels were all going after insects on the ground in this one spot.

The tilled dirt was in preparation for new sod.  Most of the Parade Ground has brand new grass, which is lovely for people to sit on, but the old grass, which contained clover, dandelions and other wildflowers, supported a lot of bees, butterflies and other insects. This made it attractive to the birds. As the old grass was replaced with new sod, all the bird activity stayed on the progressively shrinking patches of old grass, while the areas of new sod appeared lifeless except for a few squirrels.

Below, one of the female kestrels flies past a squirrel on the new sod.

Kestrel and squirrel

Here she goes again, in the last light of the day. It will be interesting to see if the new grass supports more wildlife next season.

Kestrel flies across the Parade Ground


Stay tuned for the final installment in the Governors Island series, which will feature hawks.

For more photos of falcons on Governors Island, see my Flickr page.










Sunday, November 5, 2017

Christo & Dora update

Although today was a dreary one, I ventured to Tompkins Square Park and found Christo and Dora in the big elm by the Avenue A playground.  Dora chowed down on a pigeon as Christo stood guard.

Christo watches Dora eat

Christo is on the left and Dora is on the right.

Christo and Dora

After Dora was done eating, Christo flew to the branch where the leftovers were, but didn't seem interested in finishing them off. Instead, he broke a branch out of the tree and flew it towards the Gingko over on the east side of the park, where they appear to be building a new nest.

Christo

Meanwhile, Dora settled in to digest her lunch.

Dora

She didn't mind the drizzle.

Dora in the drizzle

About an hour later, Christo reappeared near the 7th Street entrance and seemed to be keeping his sights on the territory south of the park.

Christo

He has good reason to be keeping vigil. On Saturday, I saw Dora flying down Avenue A, then up to the top of one of the Village View buildings near 6th Street.


As she landed, Christo and an immature red-tail fought in the air high over the Avenue. In the photos below, Christo is the lower hawk.



They tussled for a few minutes before flying back to the park.  A fellow hawk-watcher said all three red-tails landed in the tree on the central lawn.


It's the time of year for raptor migration, so keep your eyes peeled for hawk drama in the skies.




Thursday, November 2, 2017

Governors Island 2017 - Part 5

Governors Island extended its visiting season this year by staying open through October, so I was happy to catch the last of the fall bird migration on the island.

One of my favorite sightings was this Brown Thrasher.  For several days, I heard it calling from the thick underbrush at Hammock Grove, but it only made itself visible to me one cloudy day when no one else was around.

Brown thrasher

This Bobolink unexpectedly popped out of the grass as I was rushing to catch a return ferry.  

Bobolink

Song Sparrows were around earlier in the summer, but they passed back through the island on their way south.

Song sparrow

Song sparrow

I saw more Northern Flickers on Governors Island in October than I have in my entire life.  One afternoon, I counted sixteen of them foraging on the Parade Ground along with a Merlin, two Kestrels, four Hermit Thrushes, two Phoebes, several Palm Warblers and a flock of Mourning Doves.

Flicker

Northern flicker

Palm Warbler:

Palm warbler

Golden-Crowned Kinglets were some of the last migrants I saw pass through. 

Golden-crowned kinglet

Many of the birds who looked so bright and colorful in spring were now displaying their drab fall colors such as this Yellow-Rumped Warbler.

Myrtle warbler

And this Indigo Bunting.

Indigo bunting

A lot of sparrows could be found late in the season such as this Chipping Sparrow.

Chipping sparrow

Goldfinches hung around Hammock Grove for several weeks.  Without their bright yellow color, I often found them via their happy calls.

Goldfinch

Black Ducks can be found around the island year-round.  To me, they always look like they're smiling.

Black ducks

As Halloween was the last day for visiting this island, it was only fitting to end with this...

Untitled



One major group of birds that has been missing from these Governors Island posts is raptors.  Hawks and falcons were what drew me to the island in the first place, so some raptor posts will be coming next week.