Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Environmental impact of wind power
Table title:
Birds
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Source </th><th colspan=1 rowspan=1 > Estimated mortality (in millions) </th><th colspan=1 rowspan=1 > Estimated deaths (per GWh) </th></tr>
<tr> <td colspan=1 rowspan=1 > Wind turbines </td><td colspan=1 rowspan=1 > 0.02 – 0.57 </td><td colspan=1 rowspan=1 > 0.269 </td></tr>
<tr> <td colspan=1 rowspan=1 > Aircraft </td><td colspan=1 rowspan=1 > 0.08 </td><td colspan=1 rowspan=1 > (n/a) </td></tr>
<tr> <td colspan=1 rowspan=1 > Nuclear power plants </td><td colspan=1 rowspan=1 > 0 - 0.33 </td><td colspan=1 rowspan=1 > 0 - 0.416 </td></tr>
<tr> <td colspan=1 rowspan=1 > Oilfield oil waste & waste water pits </td><td colspan=1 rowspan=1 > 0.50 – 1 </td><td colspan=1 rowspan=1 > (n/a) </td></tr>
<tr> <td colspan=1 rowspan=1 > Nuisance bird control kills (airports, agriculture, etc...) </td><td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > (n/a) </td></tr>
<tr> <td colspan=1 rowspan=1 > Communication towers (cellular, radio, microwave) </td><td colspan=1 rowspan=1 > 4 – 50 </td><td colspan=1 rowspan=1 > (n/a) </td></tr>
<tr> <td colspan=1 rowspan=1 > Large communications towers (over 180', N. America) </td><td colspan=1 rowspan=1 > 6.8 </td><td colspan=1 rowspan=1 > (n/a) </td></tr>
<tr> <td colspan=1 rowspan=1 > Fossil fuel powerplants </td><td colspan=1 rowspan=1 > 14 </td><td colspan=1 rowspan=1 > 5.18 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Cars & trucks </td><td class="highlighted"  colspan=1 rowspan=1 > 50 – 100 </td><td colspan=1 rowspan=1 > (n/a) </td></tr>
<tr> <td colspan=1 rowspan=1 > Agriculture </td><td colspan=1 rowspan=1 > 67 </td><td colspan=1 rowspan=1 > (n/a) </td></tr>
<tr> <td colspan=1 rowspan=1 > Pesticide use </td><td colspan=1 rowspan=1 > 72 </td><td colspan=1 rowspan=1 > (n/a) </td></tr>
<tr> <td colspan=1 rowspan=1 > Hunting </td><td colspan=1 rowspan=1 > 100 – 120 </td><td colspan=1 rowspan=1 > (n/a) </td></tr>
<tr> <td colspan=1 rowspan=1 > Transmission lines (conventional powerplants) </td><td colspan=1 rowspan=1 > 174 – 175 </td><td colspan=1 rowspan=1 > (n/a) </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Buildings and windows </td><td class="highlighted"  colspan=1 rowspan=1 > 365 – 988 </td><td colspan=1 rowspan=1 > (n/a) </td></tr>
<tr> <td colspan=1 rowspan=1 > Domestic and feral cats </td><td colspan=1 rowspan=1 > 210 – 3,700 </td><td colspan=1 rowspan=1 > (n/a) </td></tr>
</table>
Question:
How many birds are killed by cars and buildings?
Answer:
57 million birds are killed by cars and 365 to 988 million are killed by collisions with buildings annually.