Bird Species of Conservation Concern – Rusty Blackbird Revisited

Rusty Blackbirds
Rusty Blackbirds

The northernmost breeding blackbird of North America, the Rusty Blackbird unfortunately has the distinction of being in one of the steepest population declines of all N.A. bird species.

Rusty Blackbird - Female
Rusty Blackbird – Female

Rusty Blackbirds nest throughout the boreal forests of Canada and Alaska, but winters throughout the eastern United States in areas including wet forests near permanent bodies of water.  They will also utilize agricultural environments.  Among the protected areas considered important for overwintering habitat is Mingo NWR, located in south-eastern MO.

Rusty Blackbird - Male
Rusty Blackbird – Male

Rusties exhibit an interesting variability in plumage throughout winter and spring, as can be observed in the different birds photographed in this post.  Males are dressed with varying amounts of the rusty warm color that gives this species its name.  This coloration is located on the tips of newly emerged feathers during the molt.  As these fine feather tips wear and break off, the males will become primarily black and luminescent in summer breeding plumage.  Female Rusties are even more interestingly plumaged, with tans, browns and blues.

Rusty Blackbird - Female
Rusty Blackbird – Female

 

Different survey methods, such as the Breeding Bird Survey and Christmas Bird Count all suggest that the Rusty Blackbird population has declined by more than 90% over the past three decades.  Reasons for this decline are not well understood, but are likely to include the acidification of wetlands, loss of wetland habitat in general, loss of forested wetland habitat on wintering grounds and poisoning of mixed-species wintering blackbird flocks in south-eastern United States, where they are considered as agricultural pests.

Rusty Blackbird - Male
Rusty Blackbird – Male

In his book Birder’s Conservation Handbook – 100 North American Birds at Risk, where much of the information in this post was collected, Jeffry Wells suggests the following actions to address the population decline of the Rusty Blackbird:

  • Limit global warming pollution and acid deposition via air pollution.
  • Implement protections and management plans across the boreal forest of North America.
  • Stop deforestation of wintering habitat and implement habitat restoration.

-OZB

A Few From Wild Acres Park

 

Rusty Blackbird
Rusty Blackbird

Today I will share a few photos taken this spring at Wild Acres Park in Overland, MO.

Rusty Blackbird
Rusty Blackbird

Fascinating, Rusty Blackbirds are always a treat to find.  I am planning on publishing a post focused on Rusties soon.

Pine Warbler
Pine Warbler

A morning with a singing Pine Warbler is as good as it gets…

Bufflehead
Bufflehead

I have been surprised a number of times this spring by the waterfowl I have come across in the park’s lake.  Unfortunately, the skittish birds often flush as soon as they see people.  This pair of Bufflehead stayed for the entire time I visited the park and allowed me to get close enough to photograph.  I have found Wood Ducks, Hooded Merganser and Scaup this spring as well.

Finally, although it looks as there will not be young Groundhog in the park this year, I still see the adults from time to time.

Groundhog
Groundhog

Thanks for the visit
-OZB
handsomeozarkbillyboy@gmail.com

 

Coastal Wanderer – The Brown Pelican Visits the Show-Me State

Brown Pelican - 6A1A7149
One of these is not like the other…

Typically found in warmer coastal waters of the Americas, St. Louis birders were in for a treat by the visit of this Brown Pelican that arrived about a month ago.

Brown Pelican - Preening
Brown Pelican – Preening

The bird has been seen consistently and may stick around at RMBS for the rest of the summer.

Brown Pelican
Brown Pelican

Unfortunately, these photos were strongly affected by heat wave distortion that was prominant on this clear day.

The Brown Bomber
The Brown Bomber

Thanks for stopping by.
-OZB

 

Winter has Finally Come!

No, I’m not referring to that no account, poor excuse of a season we witnessed a few months back.  What I was finally able to do was capture a few pics of a Winter Wren.  I have never been able to get more than a fleeting glance at this skulking bird as it somehow is able to hide by rarely moving more than a few feet off the ground.  This spring, however, I was in the right place (Shaw Nature Reserve) and was lucky to find a few of these birds and follow them long enough to get a few poor quality images.

Winter Wren
Winter Wren

With more than 35 recognized subspecies, the Winter Wren has an enormous range and is the only member of the wren family to be found outside of the Americas.

Winter Wren
Winter Wren

According to NatGeo, “Per unit weight the Winter Wren delivers its song with 10 times more power than a crowing rooster”.  I was able to hear the quite complex and rapid musical songs as I watched one or two of these birds foraging.  I could tell they were merely partial songs and not delivered with full attention and voice as is often the case of migrating birds, but I was still awed by the sounds.

Winter Wren Tail
Winter Wren Tail

The photo above focuses on the quite short tail of the Winter Wren, a distinguishing and obvious field mark.

Although the next photo is quite poor, I like that it captured the typical squat, egg-like shape of the bird.

Winter Wren
Winter Wren

Finally, I thought I would add an image of a House Wren that I took on the same day, the first of this species that I found this spring.  Notice the much longer tail and the lack of any barring pattern on the flanks forward of the legs.  A generally paler bird.

House Wren
House Wren

 

-OZB

Winter of the Short-eared

I have shared images and discussed the Short-eared Owl on a number of previous blog posts.  Never did I imagine the “storm” that the “winter” of 2015/2016 was to bring.  On many different trips to a few different places, I along with my partners Sarah and Steve, were fortunate to have great looks at great numbers of these fluffy fascinations in feathers.  I can’t say for certain if this winter in this region was abnormal for hosting a greater than average number of SEOW, or if my observational skills have just improved, but it certainly seemed easier than in past years to find and watch these birds.  I’ve just finished putting together a video with some video clips and highlight images that I wanted to share. Without further ado, here you are…

Oh, the challenges video brings to an inexperienced, unprepared and poorly equipped photographer.  Throw in the fact that these birds are utterly unpredictable and it’s hard to believe I was able to capture what I did.  So, I learn and take notes and hopefully improve next year.

Short-eared Owl
Short-eared Owl

Other than the simians, is there another species easier to anthropomorphize?  Here we have cute and inquisitive SEOW, followed mere seconds later by the evil, harbinger of doom SEOW of which early writers told.

Short-eared Owl
Short-eared Owl

And then we have the indifferent SEOW…

Short-eared Owl
Short-eared Owl

Okay, I’ll stop now before they take my biologist card away from me…
Although I got a few images, I struggled mightily and missed several great opportunities at capturing SEOW in flight this season.  The randomness of the encounters coupled with challenges with lighting and equipment make this a true challenge.  Funnily, one of my better in-flight photographs was taken with a setting sun at the bird’s back – not the best opportunity…

Short-eared Owl
Short-eared Owl

The image below was taken with the sun in a better position.  Notice the catch light, which suggests that the bird was up and in flight with the sun still in the sky.  Something else in this photo that I noticed before is the difference in dilatation of the lit pupil compared to the pupil of the shaded eye.

Short-eared Owl
Short-eared Owl

Below is a flight shot from a further distance.  I liked the warm light of the golden hour, painting the dead prairie vegetation in fire.

Short-eared Owl
Short-eared Owl

One night Steve and I were fortunate to have an owl perch close to our car well into dusk.  It then left its perch and landed nearby in the vegetation.  We could not tell if it was after a prey or decided to go back to bed, as it sat there for the short remainder of the day.

Short-eared Owl
Short-eared Owl

The final image I am sharing here is just to show off those feather-covered legs.  A great adaptation for the cold climates in which these birds are found.

Short-eared Owl
Short-eared Owl

-OZB

The Leafcutter Bee

Leafcutter Bee - Megachile sp.
Leafcutter Bee – Megachile sp.

The Leafcutter Bees are an interesting group of native solitary bees found within the Megachilidae Family along with Mason Bees, Resin Bees and Carder Bees.  There are approximately 200 species of Leafcutter Bees (Megachile genus) found in North America and several of these species can be easily found in gardens throughout the eastern United States where they favor the plant families Asteraceae, Campanulaceae and Fabaceae.

 

Leafcutter Bee - Megachile sp.
Leafcutter Bee – Megachile sp.

Leafcutter Bees get their names from an obvious behavior.  These bees line their chosen nest cavities (stems, cracks, wood-boring beetle borings, holes of all kinds) with circular discs that they cut from green leaves or flower petals.  When a cavity has been sufficiently lined, the bee will deposit an egg along with a provision of nectar and pollen, afterward abandoning the nest.

Leafcutter Bee - Megachile sp.
Leafcutter Bee – Megachile sp.

Bees in this family are abdominal pollen collectors, as can be seen in the photo above.  Unlike most bees that hold pollen in brushes on their legs, the Megachilidae hold their pollen on the underside of their abdomens that consist of course, unbranched hairs that curves towards the tail.

Leafcutter Bee - Megachile sp.
Leafcutter Bee – Megachile sp.

A diagnostic behavior of the Leafcutter Bee is their habit of extending their abdomen vertically while they forage.  I have not been able to find an accepted reason that they do this.

Leafcutter Bee - Megachile sp.
Leafcutter Bee – Megachile sp.

This is a group of native insects that anyone can help in their own backyard.  Consider making, purchasing and installing nesting structures for your native pollinating bees.  It’s quite easy to do and will help out a lot in suburban where natural sites for nests are often hard to find.

Fragrant Water Lilies

Fragrant Water Lilies - 1
Fragrant Water Lilies – 1

Here is a series of the freshly blooming Fragrant Water Lilies (Nymphaeaceae – Nymphaea odorata) taken at Shaw Nature Reserve this past summer.  I converted these to look like oil paintings using Photoshop CS6.

Fragrant Water Lilies - 2
Fragrant Water Lilies – 2

This plant uses an interesting pollination strategy.  Insects are attracted to the flower and land on the concave tip of the ovary which contains a small amount of liquid.  If the insect has visited another lily flower previously, then the pollen it is carrying gets washed off in this fluid and pollinates the flower.  Often, the insect pollinator (usually small, native bees) will not be able to escape this small pool before the flower closes for the night and will therefore drown.  See Steyermark’s Flora of Missouri by George Yatskievych for more details on these interesting wetland plants.

Water Lilies - 3
Fragrant Water Lilies – 3

Thanks for visiting…
-OZB

A Tale of Three White Giants

Trumpeter Swans
Trumpeter Swans

Missouri is home to three giant white swan species that can be difficult to distinguish without a bit of training or education.  All three swans belong to the genus Cygnus and rank among the largest waterfowl on the planet.  The first species we will consider is the Trumpeter Swan (C. buccinator).  Ranked as both the largest waterfowl species in the world and the largest flying bird of North America, the Trumpeter Swan is considered a conservation success.  Beginning in the 1600s the birds were collected for their meat, skins and feathers.  This unregulated slaughter lasted until the passage of the Migratory Bird Treaty Act, which provided the species some protection. Their population rebounded from a level as low as 32 birds documented in 1932 to 15,000 – 20,000 estimated today.  Trumpeter Swans only winter in Missouri, spending their summer nesting season from the upper great plains up to Alaska.  As many as 600 birds have been counted at Riverlands Migratory Bird Sanctuary during a winter season.

Trumpeter Swans
Trumpeter Swans

The Tundra Swan  (C. columbianus) are more widespread across North America compared to its larger relative, the Trumpeter.  And, although they far outnumber the Trumpeter in total population, the Trumpeter is actually the more abundant winter resident in Missouri.  For reasons unknown, this winter we have seen an unusually high number of the comparatively rare Tundra, giving birders something to be excited about.

In single species groups, especially at a distance, the two species can be challenging to tell apart.  However, when seen up close and spaced closely together, the differences are more easily identified.  On average, the Tundra is 1/3 to 1/2 the size of the Trumpeter.  In addition the border of the black color surrounding the bill is different in the two species and the Tundra usually has a yellow spot on the lores, near the base of the bill.  I’ll guide you to your favorite field guide for more specifics.  With this information, can you spot the four Tundras in the image below?

Mix of Swans
Mix of Swans

Here is a closeup of the two species in flight.  Easy to spot the Tundra here.  Right?

Trumpeter : Tundra - 2.1
Trumpeter : Tundra – 2.1

It was such a treat being able to watch a group of Tundras carrying on…

Tundra Swans
Tundra Swans

Finally, our last (and quietest) of Missouri’s Cygnus – the Mute Swan (C. olor).  The Mute is native to the old world and exists in North America as a naturalized resident.  Still raised and sold on the captive market, the Mute is typically a year-round resident in these parts, moving only to find open water in the dead of winter.  These birds are easily recognized by the large, orange-collored bills, often with a bulge at its base.  I photographed this pair at Binder Lake S.P.

Mute Swans
Mute Swans

There you are, a quick overview of the Missouri’s white giants.

Thanks for the visit.
-OZB

A Straight-snouted Weevil

Baptisia alba
Baptisia alba Seedpod

Almost reflexively, I pull the baby rattle-shaped seed pod from the stately White Wild Indigo (Baptisia alba) as I meander through Shaw Nature Reserve’s prairie trails.  I can’t help it.  I make sure the pods are always black, mature and any seeds left unravaged I simply help to disperse along my walk.  But in doing this so often in the late summer and autumn for so many years I have come to notice that this common forb cannot disperse many seed.  Because, inside the seed pods, like the one pictured above, I usually find multiple seed predators – the short-snouted weevils, Trichapion rostrum (Family Brentidae).

Trichapion rostrum
Trichapion rostrum

Baptisia seed are favored among other insects as well, but what they may lose in this stage of life, they pick up as they grow, for the false indigo are long-lived, drought-tolerant perennials that contain large amounts of secondary compounds that make them absolutely unpalatable to grazing mammals.  The photo below shows these tiny beetles (3.0 – 3.5 mm) among the husks of a number of seeds.  I have not been able to find a source that suggests if both larvae and adults feed on these seeds, or just one of the growth stages.

Trichapion rostrum
Destroyer of Seeds

Here is an image of a couple, shortly after I split their double-wide…

It's the Visitors, Martha!
It’s the Visitors, Martha!

These little one have been a source of fascination for me.  I hope to learn more about them someday.

-OZB