SCORES & OUTDOORS

by Roland D. Hallee

Walking through the woods following a snowfall can show evidence of many wildlife tracks. One that I saw recently was that of the Eastern Cottontail rabbit.

The Eastern Cottontail, Salvilagus floridanus, is actually a New World cottontail rabbit, a member of the family Leporidae. It is one of the most common rabbit species in North America.

Here in Maine, its numbers has a profound affect on the Canada lynx population. The survival rate of the lynx is dependent on a healthy cottontail population.

The Eastern Cottontail is chunky red-brown or gray-brown in appearance with large hind feet, long ears and a short fluffy white tail. Its underside fur is white. There is a rusty patch on the tail.

Eastern cottontail

Its appearance differs from that of a hare in that it has a brownish-gray coloring around the head and neck. The body is lighter color with a white underside on the tail. It has large brown eyes to see and large ears to listen for danger. In the winter, its coloring is more gray than brown. The kittens develop the same coloring after a few weeks, but they also have a white blaze that goes down their forehead. This marking eventually disappears. The average adult weighs between 2-4 pounds. However, the female tends to be heavier.

They can be found in the eastern and southwestern United States, southern Canada, eastern Mexico all the way down to South America. Originally, it was not found in New England, but it has been introduced here and now competes for habitat with the native New England cottontail.

The rabbits are active at night, and do not hibernate in winter. Predators include hawks, owls, coyotes, wolves and the aforementioned lynx. On farms and in gardens, they are considered pests and are often trapped or shot to protect plants.

Mating occurs from February to September. Males will mate with more than one female. Females have 2 to 4 large litters of up to nine young in a year. After the female has given birth to her offspring, she can mate again immediately thereafter. The kittens are weaned after three weeks and leave the nest after seven weeks. The kittens then reach mating age after three months.

The Eastern cottontail is a very territorial animal. When running, it can jump from 15 feet, which can aid in avoiding predators. When chased, it runs in a zigzag pattern so the animal chasing it will lose its scent, making the rabbit harder to follow. They can run up to 18 miles per hour. The cottontail prefers an area where it can hide quickly but be out in the open. Forests, swamps, thickets, bushes or open areas where it can dig a burrow are optimal habitation sites for this species.

I had one appear in my backyard a few years ago and seemed to have settled in very well. It apparently found a buffet of clover that grows wild around my garden area. It stayed around for about a week. Unfortunately, although it seemed content where it was, the constant attempt of neighborhood kids to capture it led it to run off in a desperate escape attempt on several occasions. I found it dead one Sunday morning, apparently the victim of a road kill collision with a car.

SCORES & OUTDOORS

by Roland D. Hallee

Like I do every Saturday morning during the winter, I stand at my kitchen window, while I’m waiting for the Keurig to brew my first cup of coffee, and watch the bird feeders. The usual cast of characters come and go. However, last Saturday, I caught a glimpse of what looked like a redpoll.

I’ve seen them at the feeders before, but it’s been a while. That, in itself, is not unusual because redpolls are Arctic birds and are members of a group known as northern finches. They are denizens of the taiga and tundra, but will move south every couple of years in what is called irruptions. Irruptions occur when these birds, who normally reside in high latitudes, move south in large numbers. It is generally agreed these irruptions are triggered by shortages of food in their normal ranges.

In North America, irruptions among seed eaters include Pine Siskin, Purple Finch, Pine Grosbeak, Evening Grosbeak, White-winged Crossbill and Redpolls. The Red-breasted Nuthatch will also come south during invasion years.

male redpoll

Redpolls, Carduelis flammea, are about 5 – 5-1/2 inches long with a wingspan of around 8-1/2 inches. They have a red cap, black chin, reddish wash on the breast, pink rump, somewhat forked tail, whitish under parts and overall brownish stripes. What is unusual about these birds is that they are relatively tame and show little or no fear for humans. It is believed that is because they live so far north away from human habitations. They can be confused with the house finch to the casual observer. I know I was when I first saw one.

Your next question would be, how do these little birds survive the winters of the tundra? Around the Arctic regions, winters last up to six months and temperatures plunge well below freezing. Research has shown that redpolls are able to survive temperatures down to -89 degrees F.

They have built-in heating systems. One of the most important anatomical adaptations is what is called their esophageal diverticulum, a partially bi-lobed pocket situated in the neck. They use the pocket to store seeds, especially before nightfall or before a storm. The extra seeds allow them to feed while sheltering from the cold. They also do like other species, by fluffing their feathers to trap layers of air to insulate their body to greatly reduce heat loss.

Redpolls will sometimes burrow into the snow to escape the cold weather. Under the snow, temperatures will remain at about -24° F even when air temperatures drop to -49° F.

Redpolls are attracted to backyard feeders, especially thistle seeds. In fact, the genus name Carduelis comes from the Latin Carduus, which means Thistle. Well-stocked feeders that attract finches will most likely attract Redpolls. One of our feeders is a fully stuffed sock of thistle seeds. Although I have not seen another redpoll to this date, I’m sure that is what attracted that one.

But, with redpolls, where there is one, there are many more. Outside the breeding season, they can form large flocks, which sometimes includes mixing with other finches. We have an unusually large number of American goldfinch at our feeders, so I’m wondering if the redpolls have intermingled.

Their main habitat consists of thickets and birches. In winter, they prefer semi-open country, including woodland edges and brushy or weedy fields. During the breeding season, they hang out in clearings of birch or spruce forest, thickets of willow, alder, or dwarf birch, bush areas on the tundra.

They are widespread and abundant, and are not listed as a bird of concern by the International Union for Conservation of Nature. Between 1955 and 2000, 342,158 Common Redpolls were banded. Of these, 698 were encountered at locations away from where they were banded. Studies show redpolls live up to eight years in the wild.

If you have thistle in your feeders, be on the lookout for them.