The squatter family: those cute – and seemingly precocious – little Carolina chickadees!

Carolina chickadee IMG_3138©Maria de BruynresI have two bird boxes in my yard designed to attract brown-headed nuthatches (Sitta pusilla). While I do have these birds at my feeders, they have not deigned to create nests in the boxes; one is still empty and the other was occupied by a family of squatters – darling little Carolina chickadees (Poecile carolinensis). I don’t know if this pair had had kids together before, but sometimes these birds retain their bonds for several years.

In addition to the nuthatch boxes, I have five bluebird boxes and cCarolina chickadee eggs IMG_4429©Maria de Bruynhickadees had begun nests in two others. It is not uncommon for them to begin a couple nests and then finally settle on one. On 12 April, I discovered that Mom had laid five white with brown-specked eggs in a nice soft nest made of moss, soft grasses and some down, even using a bit of pillow stuffing I had left out for interested nest-builders.

Ten days later, 22 April, I opened the box to see if everything was ok and surprised her sitting on the nest. (I had tapped on the box beforehand in case she would want to leave for a bit; didn’t happen!) She gazed at me in alarm and then began dipping her head and beating her wings against the nest; this is called a snake display to warn off predators.

Carolina chickadee IMG_4623©Maria de BruynCarolina chickadee IMG_4624©Maria de Bruynres

Carolina chickadee nestlings IMG_4680©Maria de BruynresTwo days later, I opened the box and discovered the eggs had hatched – I think she had been brooding them two days earlier since the babies didn’t seem quite as naked as I expected. That would mean they hatched after only about 10 days (and the average seems to be 12-15 days of incubation according to websites).

Both parents take on feeding their offspring. In warmer weather, they search for insects among foliage and under tree bark, sometimes hanging upside down to get a meal. This pair also visited the nearby feeders, obviously intent on teaching their young that suet, dried meal worms and seeds are also good to eat.

carolina chickadee IMG_6507©Maria de BruynCarolina chickadee IMG_3021©Maria de Bruyncarolina chickadee IMG_6378©Maria de Bruyn

Carolina chickadee IMG_3129©Maria de Bruyncarolina chickadee IMG_6702©Maria de Bruyn

Like the nuthatches and robins, the parents were also fastidious about cleaning the nest; and these almost full-grown young seemed to be pooping a lot!

Carolina chickadee IMG_6420©Maria de BruynCarolina chickadee IMG_6430©Maria de Bruynrescarolina chickadee IMG_6380©Maria de Bruyn
The young usually fledge about 16-19 days after hatching. If these birdlets had hatched on 22 April, I figured they would be ready to leave the nest around 7 May. Despite being sick with an infection that was keeping me mostly supine, I couldn’t let the opportunity for observation go by. So on the 5th of May, I roused myself for a sit-down in the yard in the early afternoon. I first waited until the parents had both left and carefully lifted the bird box door to see a bright-eyed, pretty much full-grown chick staring at me. S/he scooted back and it looked like there were only two others – so the other two siblings had already fledged. This did seem to be a very precocious family!

Carolina chickadee nestling IMG_4820©Maria de BruynresCarolina chickadee nestling IMG_4824©Maria de Bruynres

Carolina chickadee IMG_6407©Maria de BruynThis might be one of the chicks that fledged earlier. When a fledgling is begging for food, it quivers its wings rapidly. Females also do this before the young leave the nest when they want the male to feed them.

Because I was feeling fairly ill, I had to stop watching the parents go to and fro after a couple hours. On 6 May, I ventured outside in the early afternoon, hoping against hope that I might just be lucky enough to see the last chicks fledge. And I did!

Each chickcarolina chickadee IMG_6817©Maria de Bruyn spent time looking out of the box before venturing out. One took a flying leap and swerved up into a tree.

 

 

 

No. 2 spent some time calling (the parents were still coming in regularly with meals!), then launched itself and landed on some nearby branches.

carolina chickadee IMG_6810©Maria de Bruyncarolina chickadee IMG_6831©Maria de Bruyn

No. 3 spent time flexing its wings before venturing forth.

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I did check the box to be sure they were all out and then watched as the parents called to them as they flitted about the various trees behind the nest box. If I’d felt better, I would have stayed to observe a bit longer but I was pretty satisfied with having seen the fledging!.

carolina chickadee IMG_6951©Maria de Bruynres

The next morning, a pair of Carolina wrens was already bringing in twigs and placing them atop the chicarolina chickadee IMG_7357©Maria de Bruynresckadees’ nest (after removing some remaining fecal matter). One chickadee ventured back to peer into the box but the wren pair loudly chased the original owner away.

 

 

 

All in all, some very cool days, with some mental delight balancing out the physical distress for me.

If you liked this blog, please let me know by liking or leaving a comment here on the blog page. Thanks!

And for those who want more details on chickadees’ lives, see:
http://animaldiversity.ummz.umich.edu/accounts/Parus_carolinensis/

Brown-headed nuthatches – examples of conscientious and industrious parenthood!

IMG_3634©Maria de BruynLast weekend, when walking the woods along Jordan Lake in order to write a blog for the NC Audubon Society, I happened upon a thin dead tree standing in the water at the shore’s edge. Just then as I was looking it up and down, a brown-headed nuthatch (Sitta pusilla) flew up and made its way down the trunk to a hole where it obviously had a nest. That was a treat and I watched the mom and dad fly to and fro with provisions for the brood.

Yesterday, I decided to return and see if the industrious pair was still working on meals for their brood. They were indeed and I watched for quite a long time, wondering how they could see anything down in the nest where it has to be pretty dark.

brown-headed nuthatch IMG_3690©Maria de BruynresThese lovely little birds are native to the Southeastern US and there is a small population in the Bahamas; they don’t live in any other countries so they really are kind of special. In addition, since 1966, the population has declined by 45% because they are losing nesting habitats (dead and pine trees) to deforestation and urbanization.

IMG_4116©Maria de Bruyn IMG_4031©Maria de Bruyn brown-headed nuthatch IMG_4136©Maria de Bruyn res

The parents were most often alternating their meal runs, but occasionally they would arrive simultaneously or very close in time. They would usually alight on the trunk above the nest hole and then work their way down – they can descend head-first, which is a handy trait.

IMG_3726©Maria de Bruyn IMG_3684©Maria de Bruyn IMG_3669©Maria de Bruyn

Occasionally, though, they would alight right by the hole or work their way upwards from a little further down the tree trunk. They seemed very concentrated on their task but I learned that they were definitely keeping an eye on me because when I took up a position a bit closer to the tree for some better shots, they just hopped about in other trees waiting for me to step back again. Which I did, of course.

IMG_3639©Maria de Bruyn IMG_3627©Maria de Bruyn

Though I didn’t witness it, these small birds are tool-users, sometimes using a piece of bark to pry up tree bark in search of insects; they may even carry the tool with them. They certainly were bringing their babies varied meals, including moth caterpillars and insects of various kinds.

IMG_4164©Maria de BruynThese parents were fastidious, too, removing fecal sacs from the nest with some regularity. I had hoped to see these birds in action when using a nuthatch box I put up in my yard, but a pair of Carolina chickadees (Poecile carolinensis) are currently raising a brood there.

 

 

brown-headed nuthatch IMG_4197©Maria de Bruyn resIMG_3658©Maria de Bruyn

The nestlings fledge after about 18 days so I may be too late to see anything when I return sometime this coming week, but it sure would be cool to see them leave the nest!

brown-headed nuthatch IMG_4149©Maria de Bruyn res

So, you may ask – what happened to the blog on springtime creatures I announced last time? Well, the various birds species are working so hard and demonstrating their parenting skills so nicely right now, I decided to focus on that for a little while! Next time – those squatter Chickadees in my yard!

Weaver birds – avian architects par excellence!

sociable weaver IMG_4297©Maria de BruynWatching different species of birds build their nests in the spring can be quite entertaining, but the most amazing nests that I’ve been privileged to see can’t be found in my immediate environment — those of the sociable weaver birds (Philetairus socius geminus), which I encountered in Namibia. (Their architectural feats are rivaled by those of the bower birds, which I haven’t been able to see in person yet – maybe one day!).

The sociable weavers are birds native to Southern Africa, where stiff grasses grow that are a main component of their large communal nests. The males build these shared homes in trees and on telephone and utility poles; they are the largest nests built by any bird and can house more than 100 pairs of several generations. Some nests have been occupied for more than a century and may weigh several tons!

Sociable weaver bird nest IMG_6610 ©Maria de Bruynres

sociable weaver bird nest IMG_6604©Maria de Bruyn

The nests are a technological marvel, highly structured and providing a more advantageous temperature inside compared to outside. The central chambers retain heat and are used for roosting at night. The birds use the outer rooms in the daytime to get some shade. The nesting chambers are lined from top to bottom with soft plant material, fur, cotton, and fluff, while sharp spikes of straw or twigs protect the entrances against predators such as Cape cobra snakes. Some birds appear to be caught, however.

sociable weaver IMG_4290©Maria de Bruynsociable weaver birds IMG_4284©Maria de Bruyn

The sociable weavers may not breed during periods of low rainfall and a considerable number (sometimes more than half) of the birds in a colony may not breed in a given season. Under typical conditions, sociable weaver birds raise up to four broods per breeding cycle, with nearly all pairs being assisted by helpers; for example, older birds may help care for younger siblings and unrelated hatchlings. Interestingly, other species of birds may also share these nests, including red-headed finches, rosy-faced lovebirds, pied barbets, familiar chats, ashy tits and pygmy falcons.

 baglafecht weaver IMG_1506 MdBweaver bird nest IMG_3560 ©Maria de BruynBaglafecht weaver (Ploceus baglafecht) in Kenya

Among other types of weaver birds, the males also are the nest builders, hoping to attract females with beautifully constructed homes. They can use their strong, conical beaks and feet to actually tie knots in the grasses used to form the nests, making the nests sturdier.

Weaver bird nests IMG_6570©Maria de Bruynresweaver bird nests IMG_6552©Maria de Bruynres

The male sparrow weavers of Africa build “apartment-house” nests, in which numerous birds live in separate but neighboring flask-shaped homes that are entered through tubes at the bottom.

The buffalo weavers, on the other hand, make large stick nests that are untidy outside but may have spherical woven nests inside.

red-billed weaver ©Maria de Bruyn

Red-billed buffalo weaver (Bubalornis niger) in South Africa

The bluebirds and robins here can make some nice-looking nests, but the weaver bird nests are among my real favorites!

Next blog: to be determined!