Thursday, December 26, 2013

2013 Minocqua Christmas Bird Count


Most abundant bird of the CBC - Black Capped Chickadee
photo by Azael Meza

The Minocqua Christmas Bird Count (CBC) was conducted on Saturday, December 14, 2013. The following table is a summary of the results of this year’s Minocqua CBC.  Column one depicts the species of birds recorded.  Column 2 depicts how many years each species was recorded out of 16 years of records.  Column 3 shows which year each species of bird was recorded.  Column 4 shows the number of birds that were recorded for each species.  Note that in column 4 (CW) indicates species that were not recorded on the count day but were observed and recorded within the count week, which includes 3 days before or after the count day.  Under CBC rules (CW) species are recorded.

Species
# Yrs. Of Occurance
1st Count Year
2013 Count
Canada Goose
3
2007
1
Ruffed Grouse
11
1962
4
Bald Eagle
14
1962
3
Sharp-shinned Hawk
1
2013
1 (cw)
Rock Pigeon
7
1997
5
Mourning Dove
9
1998
39
Red-bellied Woodpecker
8
2006
7
Downy Woodpecker
14
1962
26
Hairy Woodpecker
15
1962
23
Pileated Woodpecker
11
1963
14
Blue Jay
16
1962
81
American Crow
13
1964
51
Common Raven
15
1962
15
Black-capped Chickadee
16
1962
220
Red-breasted Nuthatch
15
1963
53
White-breasted Nuthatch
16
1962
41
Brown Creeper
9
1982
1
Dark-eyed Junco
5
1962
1
White-winged Crossbill
4
1964
4 (cw)
Northern Cardinal
2
2011
5
House Finch
4
2008
6
Common Redpoll
6
1997
4
American Goldfinch
11
1962
110

Total Bird Count


710
Total Species


21

The Minocqua CBC was first conducted in 1962 by 3 observers in one party that spent about 8 hours in the field looking for birds.  The count has been intermittently conducted since then until the Discovery Center Bird Club took over sponsorship in 2006.  The club has been conducting the count annually since 2006, so this was the eighth consecutive year for the club’s involvement. The 2013 Minocqua CBC was conducted by 11 people who participated in 4 field parties with each party being assigned approximately one-fourth of the count territory.  In addition there were 9 people who reported count results from 7 yards with bird feeders.  This level of participation was similar to other recent years. 

The results of the 2013 Minocqua CBC were above average when compared to the 16 year history of the count.  The 16 year average for total birds counted each year is 596 birds per year and 19 species per year.  However, when comparing the 2013 data to the average for the 8 years that the bird club has been involved, 2013 was a below average year.  The average for total birds and species counted over the past 8 years is 847 birds and 23 species.  The higher results over the past 8 years probably should be attributed to differences in effort compared to earlier years rather than likely relative abundance of birds.
The 2008 Minocqua CBC still is the record holder for this annual effort when 1,418 birds and 27 species were recorded!  The 2013 CBC resulted in about one-half the number of birds in 2008 even though the effort and weather conditions for both years was similar.  The difference was that in 2008 the observers recorded good numbers for bird species that were absent in 2013.  Among those species are Wild Turkey, American Robin, Cedar Waxwing, Red Crossbill, Snow Bunting, Common Redpoll, and Pine Siskin.  There also were over 300 American Goldfinch reported in 2008 compared to 110 for 2013.

Second most abundant species - American Goldfinch
photo by Azael Meza

Comparing data for 2013 to the 2012 Minocqua CBC shows that fewer birds and species were observed in 2013.  The 2012 CBC resulted in 27 species which tied the high count in 2008 but 2013 yielded 21 species.  Both 2008 and 2012 were exceptional winter finch years.  Significant numbers of Pine Siskin (22), and Pine Grosbeak (26) were recorded in 2012 but none were reported for 2013.  In addition, comparing two years (2012/2013) show that in 2012 there were higher counts for Canada Goose (22/1), Mallard (17/0), Wild Turkey (45/0), American Crow (114/51), Mourning Dove (53/39), and Common Redpoll (137/4).

So, if we don’t get incredible results every year, why do we do this?  Well, most of all, it is FUN!  Also, doing the CBC is a wonderful way to contribute, via citizen science, to the National effort lead by the National Audubon Society and the statewide effort lead by the Wisconsin Society for Ornithology. This is very consistent with the mission of the North Lakeland Discovery Center and the Discovery Center Bird Club. 

I also think it is locally interesting to know about our local bird populations.  For example:  Minocqua CBC participants have recorded a total of 51 species of birds over 16 years but never more than 27 species during any single CBC.  Seven (7) species have been recorded only once in 16 years (Boreal Chickadee, American Robin, Cedar Waxwing, American Tree Sparrow, Red Crossbill, Common Grackle, Hoary Redpoll).  Three (3) species have been recorded every year (Blue Jay, Black-capped Chickadee, White-breasted Nuthatch). Three (3) species have been recorded 15 out of 16 years (Hairy Woodpecker, Red-breasted Nuthatch, Common Raven).   Winter birds are more abundant during some winters compared to others.  There is a natural fluctuation.  Local bird population trends perhaps can be detected and can raise questions.  For example, Wild Turkey was first recorded in good numbers in 2008 and every year since but none were recorded in 2013. Certain species of birds are recorded nearly every year while some are rarely recorded (see table herein). Some species are only recorded when certain conditions exist, e.g. open water. Most species of birds that have been recorded in Wisconsin (about 433) have never been recorded in the area during CBCs. Any given year, something new could show up and thus become a “first”.  This happened for the 2013 count when a Sharp-shinned Hawk was reported during the count week but not on the count day (CW). In 2012 a Hoary Redpoll was recorded for the first time ever and in 2011 a Northern Cardinal was recorded for the first time (5 recorded in 2013 by 2 different field parties).

I want to express my appreciation to all 20 people who helped with the 2013 Minocqua CBC.  Feeder counters who have kept their bird feeders filled and spent time detecting and recording birds visiting their feeders are critical to the success of this annual effort.  Counted among these are Jean Wiggins, Elaine Kotlarek, Milly Reinemann, John and Susan Brant, George Zickert, Kathy and Rick Jolin, and Sarah Kemp. 

A good number of species of winter birds aren’t necessarily found around bird feeders, so the field counters make it possible to find and record those species so their effort is especially appreciated.  The 2013 field counters included:

·         Northwest Quadrant - Guy David (Count Coordinator and Leader), Ed Marshall
·         Southwest Quadrant - Peter Rasmussen (Leader), Heather Lumpkin, Leanna Jackan
·         Northeast Quadrant - John Bates (Leader) and Mary Burns
·         Southeast Quadrant - Donna Roche (Leader), Kay Hoff, Jean Hanson, and Carnie Andrews.  

Report submitted by Discovery Center Bird Club Member, Guy David.

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