Cape May

Cape May
(RE BERG-ANDERSSON)
Showing posts with label twitter. Show all posts
Showing posts with label twitter. Show all posts

Monday, December 17, 2018

Tweeting the Birds

We recently had two days of heavy rain and so I kept the feeders indoors because too much water can rot the seeds and then they are useless. After those two days I put the three feeders (two with sunflower seeds, one with suet) out and watched them from my kitchen.

When the snow is thick, food sources are thin aside from feeders.
(Margo D. Beller)
For a long time there was no activity. Then a white-breasted nuthatch came to the house feeder, then a couple of titmice. Then nothing. A white-throated sparrow appeared on the flood wall and then flew to the base of one feeder pole to look for dropped seeds or scratch at the ground. Later, I would see jays fly to a seed feeder, chug down a few seeds and then fly off to trees to cache them in some hiding place for later eating. Then, a male cardinal flew in. Eventually a flock of house sparrows and house finches arrived en masse at the two seed feeders.

How did they know food was available? How do birds communicate that knowledge? I am no scientist but I have some theories based on years of observation.

Chickadee investigating the house feeder. As it darts to
and fro with seed, it will attract the attention of other
birds hungry for seeds - or for feeder birds. (Margo D. Beller)
Theory 1: The birds remember where there are food sources. If they don't find the feeders out one day, they come back and look again later that day or the next. In my yard they will find the feeders out most days until summer comes, when there will be plenty of other food sources.

If they find no food, they must seek it elsewhere. Birds must eat to survive and in winter they can't hang around the yard in hopes something may turn up. That also includes the hawks that know where there are feeders drawing the smaller birds they eat for their own survival.

Theory 2: A big, bright bird, be it a noisy one like a jay or a quiet one like a cardinal, is hard to miss. So if other birds are flying around the area and see that bright color at a feeder, they follow it, sorta like being followed on Twitter.

White-throated sparrow watching the activity at
the feeders. Soon it will fly below
and pick up what other birds drop. (Margo D. Beller)
Theory 3: Speaking of tweeting, some birds are very vocal. There's the shrill "Thief!" call of the jay are the softer "dee, dee, dee" of the chickadee, the sharper variant of the titmouse and the "hank hank" of the white-breasted nuthatch. Other birds hear the calls and investigate. It's the same reason why, when I find a flock of titmice in the woods, I try to look at as many individuals as possible in case something different is flying with them looking for food. That way I've found myrtle warblers and gold-crowned kinglets foraging with the titmice and white-crowned sparrows with their white-throated cousins.

Theory 4: Birds communicate in a way we humans can't do ourselves or possibly understand.  

Likely it's a combination of all the above. Among each species during the breeding time the birds communicate which area is their territory, sing songs to attract mates or call to their young. But hunger is the main driver at this time of year. When there are few insects, birds must rely on weed seeds or those in feeders. Birds spend a lot of time and energy looking for food and in harsh winters many will die. So when they find food, whether they mean to communicate that information or not, the news gets around.

My job is to provide food and alert the birds so I can continue to hear their tweets.

Thursday, June 23, 2016

Summer Babies

When my first niece was born nearly three decades ago, we waited for the phone to ring. Back then it was a landline on a table in the hall. We were not alone in waiting. When we visited MH’s parents, each time the phone rang he’d yell, “The baby, the baby!” but it was usually someone else.

When the call finally came, I answered and MH yanked the phone from my hand. “I’m the blood relative,” he said. I’ve never forgotten that. Luckily, our niece loves me just the same as him.

(photo courtesy of Redmond family)
This niece has just had her first child. Everyone knew about it within seconds on Facebook and there were literally hundreds of congratulations and other comments on the many photos. It is a fast and technological world we live in now.

Meanwhile, out in the yard, birds are also having babies in the June heat. However, they aren’t tweeting out the news using Twitter or posting to Facebook, so you have to keep your eyes open and watch for the signs.

I knew when the babies were hatched in the house wren box when Papa Wren stopped his near-constant singing. Now, he was trying to protect the young by keeping the location of the nest hidden.

Another clue: Both parents started shuttling back and forth to the box with food. One would get something, bring it to the box, climb inside, then come out. The other would come seconds later to do the same thing.

Wren box (Margo D. Beller)
When the babies got too big, the parents stayed on the outside of the box to feed the young. It is up to each chick to push its way to the front to get fed. Mom or Dad won’t be coming inside anymore. Fight to feed or die.

Today I came into the backyard and the wrens were scolding their warnings to the young, as usual at my appearance. However, this time, they were in a bush at the other end of the yard. When I stood under the nest box, none came to hover over me as they were doing as recently as the day before.

The young had fledged.

It’s not just the wrens that are doing this. From my open window I can hear the raucous families of tufted titmice and black-capped chickadees. Taking a walk, I see small groups of starlings, the young a sandy brown color, not yet the black of their parents.

Once the quiet period of egg laying, brooding and fledging is over, the young noisily follow their parents around, begging to be fed, slowly learning how to do this for themselves. The birds are more active and are more easily found in the thick tree canopy.

I am hearing more bird song, too, cardinals, chipping sparrows and song sparrows singing territorial songs before starting a new brood. Most birds are not monogamous. Once the young have fledged, the parents go their separate ways and start over. Many birds have several broods each season before it is time to head south in the autumn. That means two birds can create 10 or more birds in one summer. They must do this for their species to survive. 

Tree swallow brood -- look carefully, there are 5 (Margo D. Beller)
Humans do things in a different order. You have nine months of great anticipation and frenzied nest building after conception, not before. Then, once the young are born, it can take decades of care and feeding to get the young ready to leave the nest, presuming they want to or can afford it.

Birds have it easier.