Thanking the Herons

As a community scientist for Maine’s Heron Observation Network these past 14 years, I have the distinct honor of keeping track of several rookeries each spring/summer to monitor the number of active nests, inactive nests, hatchlings, young, and fledglings, plus any obvious disturbances. It’s a task that only takes a few hours every other week and the time span in total is about six weeks. Those few hours are some of the best hours that I spend outdoors because rookeries in this neck of the woods are located in or abutting wetlands and offer a rich abundance of wildlife.

From the HERON website: “The Heron Observation Network of Maine (HERON) is a citizen science adopt-a-colony program started by Maine Department of Inland Fisheries and Wildlife (MDIFW) in 2009 to help investigate the status of Maine’s nesting population of great blue herons. Since 1983, the coastal breeding population of great blue herons has undergone an 82% decline; and it is unknown whether that decline is a statewide phenomenon or whether it is restricted to only the coastal colonies. This is where HERON volunteers come in: they collect invaluable data on colonies statewide that will help biologists assess the population trend over time.

One of my rookeries has had no nests for the past two years since Bald Eagles wiped out the Great Blue Heron population three years ago.

But the beaver pond in the photo above is making a come-back after peaking with about 30 I think about ten years ago, then crashing to a single digit number. This year, we counted 12 nests, all of which proved to be active over the course of the six-week time span.

Observing means making ones way quietly to the edge of the wetland, listening as the youngsters squawk for an incoming meal, then finding a good spot to see the nests with binoculars while not disturbing the birds, and begin counting.

We avoid publicly sharing the locations of these sites for as it is stated on the HERON website: “If you are not the landowner or colony monitor, please refrain from visiting colonies during nesting season to minimize unnecessary disturbance.”

This third rookery we thought had crashed after discovering two nests two years ago and then none last year. But . . . we knew the birds had to be somewhere in the vicinity because, though several rookeries in the area were no longer active, there were still adult birds visiting local ponds and lakes and rivers.

It wasn’t until Maine State Waterbird Specialist Danielle D’Auria completed a flyover this spring and sent an email with the subject: “Your colony is THRIVING!” and two friends joined me and we explored the wetland from a different vantage point than in the past, that we knew just how big the colony was. In total, there are over 40 nests and over 30 of them were indeed active.

Counting so many can be a real challenge, and even with three pairs of eyes, we still needed to restart several times with this larger colony, but figured out a system to identify certain nests as a given # and then restart from there and move from left to right, though sometimes we had to dip down and then look up again to find the next nest.

What added to the counting confusion was that my peeps and I suffer happily from Nature Distraction Syndrome (I used to call it Disorder, but really, it’s such a good thing that it deserves a new name), aka NDS rather than NDD.

And so this is a Dot-tailed Whiteface Skimmer, its name reflecting its features.

Looking up again, we’d spot hatchlings, those fluffy little balls that we could barely make out unless they popped up . . . definitely one of the many joys of those special mornings.

Sometimes the youngsters were difficult to spy based on how well they blended in with the snags upon which the nests were built.

And then it was a matter of deciding: is that a bird or part of the tree? And is there another lump in there? Do you see three or four young, plus the two adults?

Often, several adults stood sentry, keeping an eye on the entire rookery, rather than heading off to fish and feed the youngsters. This one stood on one leg, which I’ve read is a way for birds to reduce the amount of heat loss on their unfeathered limbs.

One of the things I always found amazing is that by week #3, the youngsters seemed to know that their parent was approaching with a feast to share, while those in the condo below waited patiently and quietly for their meal on wings to fly into the nest.

Meals were regurgitated, with those prehistoric croak-like squawks perhaps encouraging the parent to pass the food to its youngsters.

And then it was time for the kids to fight over who got the best and biggest bite, while momma or poppa stepped aside to let them assert their birthright. The question remains, did the first born always get the worm? Or in this case fish or amphibian or whatever the meal might be?

And how could we not admire the Green Frogs that “Ga-dunked” their banjo strings as they surrounded us and kept moving in closer making us think we might become a meal while we stood there and counted?

Feeding time continued to be the birds’ favorite time and as they grew bigger, they certainly became more assertive.

Vying for position continued to stymie us for we didn’t understand which mouths received first dibs. But of equal importance, how did all of those birds remain in their treetop nests without falling over during such squabbles? And how did the nests and birds withstand the rain and wind that marked our spring and summer here in western Maine?

Motion below the nests caught our attention once again, and what we first thought was a Beaver because it explored a beaver lodge, morphed quickly into a Muskrat when we spied its rat-like tail.

It went about its business as we watched, probably in search of food, maybe to feed its own youngsters.

And then there was the ever lovely Four-spotted Skimmer Dragonfly.

By week #6, most of the kids were tweens, and those in the left-hand duplex watched intently for their lunch box to arrive just as their neighbors to the right were about to eat.

We labeled this double-nest “The Squawkers” because anticipation of the lunch box contents in both places was extra loud.

Once the right-hand duplex had finished eating, they turned their attention next door, though nary a beg did they offer and nary a tidbit did they receive.

Still they looked on.

And so did we . . . at this female Eastern Pondhawk Skimmer dragonfly with her bright green thorax and pair of white cerci (terminal appendages).

During week #6 the moment arrived, when encouraged by others a teen got up the gumption . . .

to step out on a limb . . .

and then turn back to say, “Hey, look at me. I did it.”

And then, in an instant, first flight!

So where did the herons go once they no longer needed to remain at their breeding grounds? Well, I took off in my kayak to see if I could answer that question. And a Slaty Blue Skimmer posed on my boat much like a figurehead, this one in obelisk form with its abdomen raised toward the sun to offer some relief from the heat.

I also found the Eastern Pondhawk’s mate. Look at that green face, and powder blue abdomen, or the hints of color on its wings.

I was equally excited when I spied him again, this time with a frontal views. I hope your “Ohs” and “Ahs” match mine.

Another “Oh” moment: A Water Snake peering out from under its lilypad-shaped sun umbrella.

And a couple of Painted Turtles basking upon a rather shaded rock.

Plus a pair of juvenile Mallards in preening mode.

And among my favorites, okay, really, they are all my favorites, but I was quite surprised to spend a few minutes with this Beaver while searching for herons one recent day.

Tada. The search has ended and going forward I’ll probably spot them more and more frequently for I know how successful at least two local rookeries have been this year.

I give great thanks to this Great Blue Heron and all of the others because they offered a chance to not only contribute to research, but also to spend some delight-filled hours standing still and observing. Your breeding and food-gathering habitats are my favorites too.

6 thoughts on “Thanking the Herons

  1. I just wanted to quickly tell you how much I have been enjoying your writing and photos!! It’s such a pleasure to receive an email from you.

    Thank you so very much!

    Liked by 1 person

  2. Leigh, these pics are awesome. Gere and I often share breakfasts with an adult heron, or two, who hunt in our pond or on top of the cascade. There has always been a small rookery south of us on Bear River. Can I become a Heron Observer?

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