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April 08, 1962 - MallardsExclusive Sunday Review Sketch by Dennis Puleston of Brookhaven Focus on Nature IF we have a pair of muskrats down in our marsh that the whole family has gootten to know. Late- ly during these wonderful spring days, we have gone down and watched a pair of them basking in the sun as they busily chewed away on some morsel. It seems almost as if they were thawing out after the cold, wet February we had. While we were there one day, a pair of mallard ducks swam maj- estically by. These reminded me of. the very interesting and un- usual period ducks enter during this time of the year. This period I refer to is when the male ducks lose their gaudy feathers and go into what is called the "eclipse period." But I am getting ahead of my story, let's start from the beginning. Northerly Flight Like many ducks, the mallards spend the winter months in the warm sun down south. But as soon as the first hint of spring moves into the area, their rest- lessness moves them northward toward the nesting grounds. They arrive many times even before the retreating ire and snow has ft. During this long, northerly flight the drake mallards are in continual pursuit of their favorite hen. By the time they reach the famous nesting grounds in south- ern Saskatchewan, Alberta, the Dakotas and western Minnesota, they are pretty well paired off for the season ahead. Our mallards are ,probably local ones that stay over and eke out a living right here on Long Island through the cold and difficult win- ters, although some might be mal- lards from our own Atlantic fly- way. The great majority that makes up 60% of the mallard flight, however, comes up through the Mississippi flyway and we see none of these. . Courtship Ritual Like so many, the mallards per- ' form a high. and fancy ritual of courtship before what appears to be an uninterested female. He will rise high out of the water to show his beautiful rusty breast or bow down and dip his bill into the water or perhaps he will throw back his head in a song- like gesture. Meanwhile he is busily paddling about, adding as many antics as he possibly can to woo his mate. Sooner or later, she will give in and the two will swim off in perfect contentment. It is this contented and hand- some couple that we see in our creek today. The courtship is over and the nesting sight is now on the agenda. The nest is usually on the ground, relatively close to water. Yet there are many in- stances where this bird has nest- ed above ground, in hay stacks, in abandoned hawk nests in trees, with the classic example of non- conformity being a banded duck that returned year after year to nest on a Dakota barn roof. Nest Is Work of Art As the hen builds her nest, the drake usually is close at hand and each day as a new egg is added, he will fly by quietly talk- ing to the unforeseen miracle be- low. Uusally a clutch of 6 - 15 eggs is laid and by the end of the laying period, the nest that start- ed out as a mere depression in the grass has been transformed into a work of art. To finish it off, the "nuptial down ", plucked from the hen herself, forms an insulated liner. Anyone who has ever seen one of these nests and has felt the warmth- and softness can vouch for its artistry and practicability. The nest and hen are so well camouflaged in the grass that the average person would pass them by, and yet I am afraid it does not go unseen by the skillfull crow, the prowling raccoon, and • host of other robbers who reap • heavy toll on nesting ducks each year. After the eggs are laid, and the hatch comes off, the drake pays little attention to the hen or any of her brood. As a matter of fact, he retreats to the seclusion of the larger marshes where he joins his fellow brethren in the strange and mystical "eclipse molt" I spoke of earlier. Complete Molt This molt is complete and even the large primary, flight feathers are replaced, leaving the drake quite flightless during this trans- ition period. It is at this time he is most vulnerable and for this reason seeks the shelter of the secluded marshlands. The new coat that replaces the familiar white- ringed neck, green head, rusty breast and handsome gray coat is a conglomeration of subdued and mottled colors that help him blend into his secluded surroundings. It is this camou- flage that Nature has given him that protects him most durin by Paul Stoutenburgh this dangerous period. The female does not go through an eclipse molt but rather changes gradually during the winter and spring. While we're on the subject of color, one more fact of interest is that the green head of the handsome drake is not green at all but rather a brownish - black. It only seems-green because there is a thin layer of feathers that break down the light in such a way that it appears so. It is some- thing like the rainbow effect we see on the water whenever oil is spilled. Here it is not true pig- ment but rather refracted light. Feed in Shallow Water The mallards, like the black ducks, are dabblers or puddle ducks and do not dive for their food like the mergansers, scaups, etc. Their haunts are always the shallow water where they can "tip up" and scan the bottom for shellfish, snails, seeds, plants, etc. Generally speaking, they will eat just about anything they can get, depending on their location. If they are in the grain belt, their diet will be almost exclu- sively corn and wheat and if they should be in our muddy creeks during the winter months their diet would consist of small soft clams, snails, etc. It is difficult to believe that a'duck can digest these mollusks and yet their powerful gizzard makes short work of them. Not being a diving duck with its legs set far back, the mallard is more balanced and therefore is equally at home on water or land. I'm told that out west where these ducks feed in the fields for considerable periods of time, they actually create callouses on their feet from walking. It is a shame indeed that we do not have more of the old - fashioned corn, tye and wheat fields that are, so attractive: to this type of duck, but like so many things that one time were plentiful, we must now content ourselves with an occasional gem that somehow has outsmarted, out- maneuvered, and out -flown its enemies. Let's hope the mallard duck will always be in this spec- ial class. FIELD OBSERVATIONS: L R Ernest reports: Shinnecock Hills -,March 26 Pine Siskins (8) Shinnecock - March 26 North Sea - March 27 Osprey (3) George Stonebanks report Riverhead - March 29 Marsh Hawk (2) Paul Stoutenburgh reports: Cutchogue - April 1 Tree Swallow Roy Latham reports: Orient — March 19 Longspur Orient — March 21 Osprey (2) Orient — March 24 Canada Geese (75) Orient — March 25 Snow Owl (3) Orient — March 26 Mourning Dove (2) Orient — March 27 Flicker Orient — March 31 Killdeer Dennis Puleston reports: Brookhaven — March 29 Hermit Thrush Snow Geese (25) Brookhaven — March 31 Snow Geese (8) Tree Swallow (10) Phoebe (3) Pine Warbler (3) Greater Yellow -legs (2) Montauk — April 2 Glaucous Gull Iceland Gull Ipswich Sparrow (2) Bluebird Mecox — April 2