2025 Bird Feeder Summary

 

I now have 13 years of data for my bird feeding station.  It is fun to have data to look at and play with.

All species that show up at my bird feeding station, which includes the crab apple tree that holds the feeders and the ground below are recorded.  The system isn't without flaws, as it is somewhat based on how much time I have to look out the window, but hopefully it averages out over time.

·        Average Species per Month

o   2025 had the fifth highest average species per month (17.67)

o   2025 was above average (16.72)

o   2022 still holds the record at 19.00

o   2023 is second place at 18.33

·        Month Analysis

o   January (17) was an average month (16.4)

o   February (12) was more than 1 standard deviation (2.6) below average (15.7). 

o   March (18) was average (17.5)

o   April (20) was average (20.2)

o   May (27) was 1 standard deviation (4.3) higher than average (21.5)

o   June (14) was below average (14.8)

o   July (14) was average (13.8)

o   August (13) was above average (13.2)

o   September (15) was above average (13.2)

o   October (22) was above average (19.0)

o   November (23) was almost 2 standard deviations (2.4) above average (18.4)

o   December (17) was average (16.8)

·        Comparing Monthly Totals

o   May has the most species recorded (51)

o   April and October are tied for the second most species recorded (42)

o   November has the next most species recorded (34)

o   January and July are tied for the third least species recorded (26)

o   February has the second least species recorded (24)

o   June has the least species recorded (21)

·        Comparing Monthly Variability/Consistency

o   A rating of 1 means the same birds show up every month, a rating of 2 means that half of the observed birds for that month show up on average)

o   September is the most variable month (2.49)

o   May is the second most variable month (2.37)

o   August is the third most variable month (2.27)

o   January is the third most consistent month (1.59)

o   February is the second most consistent month (1.53)

o   June is the most consistent month (1.42)

·        2025 Trends

o   Cape May Warbler, Chestnut-sided Warbler, and Fox Sparrow were first time visitors in 2025

o   40 species were recorded for 2025, which is more than average (37.3)

o   The most species recorded in a year (45) was in 2023

·        Species Analysis – 13 year trend

o   Eastern Bluebird has the highest increase (0.45 slope)

o   Song Sparrow has highest increase (0.39 slope)

o   Carolina Wren has the third highest increase (0.35 slope)

o   Blue Jay has the third highest increase (0.23 slope)

o   Chipping Sparrow has the third highest decrease (-0.08 slope)

o   Mourning Dove has the third highest decrease (-0.12 slope)

o   Common Grackle has the second highest decrease (-0.13 slope)

o   American Tree Sparrow has the highest decrease (-0.18 slope)

o   The slope for the species per year (0.87) and for average species per month (0.32) are both positive

·        Total Frequency

o   House Sparrow (100%)

o   Northern Cardinal (100%)

o   Carolina Chickadee (99.36%)

o   House Finch (96.80%)

o   Downy Woodpecker (94.23%)

o   American Goldfinch (89.10%)

o   White-breasted Nuthatch (85.26%)

o   Tufted Titmouse (85.26%)

o   American Robin (78.85%)

o   European Starling (77.56%)

o   Song Sparrow (72.43%)

o   75 species have been recorded during at least one month

o   21 species have been recorded only during one month

o   14 species have been recorded every month (including American Robin)