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<canvas id="birdsChart" width="600" height="400"></canvas>
var birdsCanvas = document.getElementById("birdsChart");

var birdsData = {
  labels: ["Spring","Summer","Fall","Winter"],
  datasets: [{
    data: [1200, 1700, 800, 200],
    backgroundColor: [
      "rgba(255, 0, 0, 0.5)",
      "rgba(100, 255, 0, 0.5)",
      "rgba(200, 50, 255, 0.5)",
      "rgba(0, 100, 255, 0.5)"
    ]
  }]
};

var polarAreaChart = new Chart(birdsCanvas, {
  type: 'polarArea',
  data: birdsData
});
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