UFO and Bigfoot Sighting

This is my second attempt at the Tidytuesday. The above visual overlays UFO sighting with Bigfoot sighting in 2014. We see some overlap between the two. After generating the visual i edited this in Inkscape.

library(maps)
library(ggplot2)
library(dplyr)
library(lubridate)

#####################
#UFO data cleaning
####################
ufo <- read.csv("https://raw.githubusercontent.com/rfordatascience/tidytuesday/master/data/2019/2019-06-25/ufo_sightings.csv",stringsAsFactors = FALSE)
ufo$date_time <- mdy_hm(ufo$date_time)
ufo %>% mutate(yr= year(date_time))->ufo_new
ufo_new %>% filter(country =="us" & yr==2014 & state !="hi" & state !="ak") %>% na.omit()->ufo_new


#######################
#Bigfoot data cleaning
######################
bigft <- read.csv("https://query.data.world/s/3bela6acmtb2em5srqqzghgws5zeik", stringsAsFactors = FALSE)
bigft$date <- ymd(bigft$date)
bigft %>% mutate(yr= year(date))->bigft_new
bigft_new %>% filter(yr==2014)%>% 
               na.omit()->bigft_new
###################################
# Plot
###################################
ufo_theme <- theme(plot.title = element_text(colour = "white"),
                   plot.subtitle = element_text(colour = "white"),
                   plot.caption = element_text(colour = "white"),
                   plot.background = element_rect(fill = "black"),
                   panel.background = element_rect(fill = "black", colour = "black"),
                   panel.border = element_blank(),
                   panel.grid.major.y = element_blank(),
                   panel.grid.minor.y = element_blank(),
                   panel.grid.major.x = element_blank(),
                   panel.grid.minor.x = element_blank(),
                   axis.title = element_blank(),
                   axis.ticks = element_blank(),
                   axis.text = element_blank(),
                   legend.background=element_rect(fill = "black"),
                   legend.key= element_rect(fill = "black", color="black"),
                   legend.text=element_text(colour = "white", size = 10),
                   legend.key.size = unit(13,"point"))

ggplot()+  
    borders("state") +
    geom_point(ufo_new,mapping= aes(x = longitude, y = latitude, color= "UFO"))+
    geom_point(bigft_new,mapping=aes(x = longitude, y = latitude,color = "BigFoot"))+
    labs(title = "UFO and Big Foot sighting in 2014", 
         subtitle="TidyTuesday Week June 25,2019",
         caption="atmajitgohil.com")+ 
    scale_color_manual(name = "Year", 
                       labels = c("BigFoot", "UFO"),
                       values = c("blue","red"))+
    ufo_theme